Why pick on homosexuals, especially the ones that are straight?

Okay so almost everyday at school at least one person decides to call me gay, people think they can just get away with it but I don't get what's wrong with being gay. Guys have used it to rip on each other for years and I never saw the point to it. Is it to establish the "Alpha Male" you know the big man on campus, saying homosexuals are just the bottom rung in society. Seriously, from basic psychology you know that most of the time when someone is making fun of you for something it's because they're insecure about it themselves. But then does this mean that almost every guy in the world that's in his teens is a little bicurious, well yeah. I actually think that could be the answer cause around that age our hormones are raging and half of us will fuck anything that moves. But like seriously, personally I have no problem with homosexuals, ever, but I have a problem with being called one because it's saying I don't have a crush on this girl in my class. It's saying I shouldn't fit in with normal society. It's just plain wrong to use "Gay", "Faggot", and all the terms that refer to a homosexual as an insult. And even worse kids use it to bully, REALLY, they're going to bully kids for being "gay" when they hear about shit like kids committing suicide for being bullied. Even worse bullying tends to greatly affect that person's personality from becoming what he's called, to reverting to looking at porn and masturbating when he feels "alone", to growing up to become some serial rapist or killer. People don't realize how much of an impact they're making on kids at such an early age. And even worse a kid at my school around the second quarter couldn't take it and he hung himself. Then there were all these rumors about why because the kid was popular and everyone loved him. A predominate one was that his stepfather picked on him, including calling him gay. Like maybe people only cared because he was popular, but I'm not so if they're saying it doesn't matter if this kid cuts the chords cause he's not popular, cause we don't like him, well to bad a developed human life is just as important as any other. Especially since some people may grow up to revolutionize the world and play a major part in it, but won't because they couldn't take the shit that kids would give them. I dream to grow up and become an engineer and tech geek so I can. But back to the main message, and yes I am bitching today, don't use gay as an insult, especially since there shouldn't be anything wrong with being gay.