It may not be the most common attitude, but it's certainly not unheard of to have feelings like that at your age. I had thoughts like that too actually around that time and before.
The key thing to remember is that just because most people around you seem to be insensitive jerks, doesn't mean they will always be that way, and especially not that all humans are that way. As others have said, after high school, everyone moves on and (usually) matures.
Just respect yourself and don't judge others until you have a real idea of how they are - who knows, you might meet some decent people. Friends make things a lot easier.
Anyway, chances are that the same jerks that are giving you a hard time now will feel bad about it as they get a bit older and will change. It's also a lot easier to talk to people in college (because no one gives a damn about fitting in or being popular).
Just try to keep all this in mind and you won't get too carried away. I'm from the US.