A million times yes! We're totally fucked, dude. I have no idea what it's like for someone else but for me it's most akin to drug abuse. I wake each morning, the haze of a dream that was far too vivid to handle still lingering in my thoughts and of course the very first thought I have is "I have to get this down." Of course most mornings I don't have time to put said idea down so it lingers and festers.
I seek out certain creative projects to take on, even if they serve no benefit to anyone else but myself. The drive to do it, live it, finish it is so strong that I'm singularly focused. Be Damned if someone tries to interrupt me during one of these projects.
I am cyclic in creativity. For a few months I want to write things down. Every scrap of paper in the house is scribbled on with notes barely discernible by anyone aside from myself. For a few months I play piano, spending hours hitting the same four or five chords until I get not a song, but just a dischordant sound I want to play. THen for a few months I go on a painting frenzy. My dreams are wild and deep, begging to be shared and I'll spend hours trying to recreate these things, only to feel as if I've fallen short from the true beauty of a place that doesn't exist.
I have tried everything to kill it. Not painting when the urge strikes fills me with anxiety and aggravation, like having an itch I can't seem to reach. I've tried keeping myself too busy to indulge in these creative compulsions, but then it seems like my life is empty, missing something important and again my mood suffers.
It scares me sometimes when I say to myself "Yeah, that van gogh fellow totally cut off his ear for someone he loved." and I can relate. It's about passion. I think overly creative people are born with more passion than they can handle, the kind of passion that kicks logic out the door and lies in wait for a way out. Creative people are constantly seeking beauty. Sometimes, if the sky is just right, I'll just stare at it, regardless of where I need to be or what I need to do. Sometimes I'll find certain people beautiful and my mind will turn over and over, wondering how to recreate it.
Creativity is in essence an obsession. The balance between insanity and functionality in a creative person is so fragile. So yeah, to answer your question, overly creative people are seriously screwed. It's damn near a mental disorder, but damn we're fun.