I know that a lot of posts here are trollish but those thoughts have to come from somewhere?

I try to take most of the things I read here lightly. But with that being said, those exaggerated claims and opinions have to have some basis for it. Are most people truly that insane but hide it well in real life? Or does this place just naturally attract the crazies? Reading this place for a month has made me so paranoid and skeptical of people. I don't know what to do.