Almost all of my friends are guys and they're cool. Maybe you're just oversensitive and look at the bad things in people. My closest friends are girls though. A lot of them are jerks to me most of the time. Probably because of how close we are though.
But... What would society be without sorting people into categories? Without making everything completely black and white? I mean, it's a LOT easier for everyone! Except when you title yourself, you can never change it, EVER. (I'm not quite sure if that was relevant or not, but i felt like saying that...... XD)