That's your OPINION, and one with which I strongly disagree. It's MY opinion that ticklish people need to be tickled. In my experience the vast majority (97+%) of tickling that I've witnessed over the last five decades was done without permission. That is A-O-K in my book. You think that's wrong? Fine. But you don't have the legal or moral authority to push your OPINION on the rest of us. There are plenty of good and decent people in the world who tickle daily without permission.
That perception is probably true, as tickling is usually unexpected, and actually it needs to be unexpected or uncontrollable to actually produce tickles. I once tickled someone that were not ticklish unless tickling were unexpected, or at some point hidden of the sight, in example, making impossible to watch the feet, so it is impossible to know what is going on.
So I too believe it is stupid to think that tickling should be "expected".
Okay, I will share a little story here that I haven't told to very many people before, because up to this day I still feel uncomfortable about it. I hear so often, that it doesn't matter if the person tickling others gets aroused from it or not, but believe me, it does!
When I was younger, my grandma used to have neighbors that I sometimes used to visit and bring them leftovers from what my grandma cooked. They were about my grandma's age, and the guy always wanted a hug. I never quite liked it, but hey....I was a kid, so I did it. When I grew older, about 14, 15, one day when the guy hugged me I realized that he had a boner pressing against me. I never ever went there again, I felt confused, dirty, used and abused. And that was just a hug!
It does something in people when you use them to get your rocks off, and even though it took me a long time to realize that it happened, in the end I realized what was going on, and it made me feel bad. Eventually, stuff like this comes out, and there most likely will be hard feelings involved.
I will not dare to say that you did not feel that way, I do not have access to your feelings, so I have to trust your words. So, you really felt bad because that man was getting excited when he hugged you.
The real question is, is that a valid counter argument against the idea that nothing bad happens from getting fun without the other people knowing?
It happens all the time, from the person that has a fantasy with a movie star, to a boy that masturbates thinking in his classmate. Should he go and tell her, hey! "I masturbated last night thinking of you". Or should he stop masturbating? It is the same as your case, you would not have suffered if you never had known that he was getting excited.
But, let's go deeper. Imagine how it was when that man hugged you for the first time. It could have been the first time ever that he felt aroused by hugging a person like you. At that moment, he was already getting some enjoyment without letting you know. What should he have done? Stop hugging you and tell you? You may say, that he should have gone apart forever and never contact you again.
But, seriously, does a man deserve to be death socially just because he has likings that are not morally accepted? In all the cases exposed here, no one ever did attack someone. The man did not raped you, the hypothetical boy of my story never raped her classmate, and the "OP" never raped her aunt. He is not even planning to have sex with her.
The reason why incest is "bad", is because the product of those relations is usually a human with very poor health, and a lot of diseases; in other words, the sons are born bad. But this is not incest, this can not even finish producing a baby. Tickling is not a sexual intercourse, he is not penetrating her. He is just touching her feet, which are not sexual organs, but very sensitive parts of the body that produce tickle.
You can not blame the people because they feel naturally attracted to other people and other actions. So, I personally think it is senseless to criminalize the relations between older people and younger people (let's think 30 years old person with 15 years old person), as the attraction is natural. And even if you think it is better not to be in such a relation, you can not criminalize the taste. A teenager is a human already developed for sexuality, and it is natural to generate attraction to other people. And, the tastes do not change with time. There is no reason to think that because you get older you like older people. That is why any person of 50 or 60 years old with a chance, prefer to be with a person of 20 or 30 years old, or even less. And I do not blame it, it is natural, and understandable.
And this even goes to tickling, which I think, it is something that everyone could enjoy if each one had the appropriate treatment. I do not think anyone would enjoy to be tickled while tied, but everyone can enjoy light nice tickles. And why is tickling fun and enjoyable? Because it produces pleasure at certain levels. Yes, pleasure, the same reason why people have sex, but also, the same reason why people play games, imagine stories, eat candies, stroke each other, etcetera.
So, why is it to hard for you to accept that you are exaggerating the things with this guy?
There is nothing really wrong here. He will not brake the marriage of his aunt, just because he tickle his aunt. His aunt and everyone else probably will never think he felt excitation from that tickling. And this is not incest, they can not have children from tickling each other. And, more important, his aunt did not complain about it. If she agrees to do it, then nothing should be wrong.
Perhaps there is the difference with your story, you were 14 years old, and immature, without being able to take the responsibility of your actions... Although you did LET him hug you. His aunt is an adult, his aunt should be responsible of her actions, and if she let him go ahead and tickle her, he is not raping her nor abusing her. Yes, there is chance that he feel sexual arousal with that, as there is chance that someone feel sexual arousal while I inflate a balloon, or I chew gum, or I walk on street, or I use certain clothes, or I make certain actions, or watching at the furniture of the house, or watching at my shoes. But not for that I stop inflating balloons, chewing gums, walking on street, using certain clothes, making certain actions, letting someone watch my home's furniture, or letting someone watch my shoes.
Fetishism is so big that anyone could be feeling excitation while watching anything you do. And probably that is out of their control. But is that enough reason to apart them and end a friendship? Would you stop inviting someone to your house just because he feel excitation with your furniture?
It is almost the same question you did here... But the answer implies not what you think. The answer implies that all those feelings are in his mind, and in his mind he can and should do whatever he wants. There is not any real material difference between him, and a cousin that does not feel arousal from tickling but only is bored and wants to pass the time, tickling his aunt's feet. What is the difference? Only what each one feel inside, but outside it is the same. And feeling is not enough to modify the materiality. And, certainly, it is unfairly discriminative or restrictive for the people that enjoy tickling like us. Simply because we feel something different to others, they will forbid us to do some activities? That is an insult, and we should not accept that. If others can tickle certain people, we should be able too, they should not restrict us, just because what we think inside us, as the material actions will be the same as others. And, as you said, love relations are more important than whatever we feel, so they should not hate us just because we feel different about an action that everyone can do.
Fuck morality.