Alien Vision, I think you make the mistake of thinking that your experiences with young people are evidence to how people are in general.
Ya know it's like...just cause that girl exists who has never dated another girl, then goes to college and decides she's a lesbian, won't stop talking about it, and then marries a guy right after college doesn't mean that most people are faking it.
I can't speak for others, but I wouldn't be surprised if there are people who do it for attention, and I have experiences with people that have lead me to believe just that. But if you can't recognize that people who do this (if they even do) are an extremely small minority that don't even come close to representing the actions and mindsets of most gay people, then you're going to have a really tough time treating gay people with the same respect you treat others with....which is no good at all.