Whos arguing that being aroused by tying up and tickling someone they find attractive isnt sexual? It definitely can be to varying degrees, or sometimes can just be for fun depending on the cirumstances.
Are you trying to say that it isnt healthy for consenting people to engage in it?
I think your the one in denial. Denail that people can have an attraction for something - something so completely natural and primal - in respects both to playful bonding with peers, significant others and family, as well as flirtatious / erotic activity amongst prospective significant others. (laughter is proven to be something the opposite sex finds attractive and appealing, and touch obviously, and tying up can be with natural submissive / dominant relationships that are an obvious part of nature in general) The things you say are coming off to me to me as being from one of those people that are only out to try preach against, and take everything away from people because YOU dont understand it.
I think your right that some attractions can develope from some form of abuse. But to generalize and say it always is, OR EVEN FREQUENTLY IS, is totally ignorant! That's like people that try to say porn is wrong because some people (probably them or someone close to them) have an uncontrolled need for it. Just because 1 out of thousands has a problem doesnt mean you have a right to judge everyone for it, frankly if 1 out of 2 people have an issue with something I dont think its right to judge both.
Why are you even on this forum?