About hate and criticism

Okay, someone tell me why people send hate mail. I honestly have no idea, its something that I don't agree with. As people say, if you don't have anything good to say then shut the f*** up! And DON'T EVER CRITICIZE ANYONE when you don't know them. Just imagine our world without it, NO BULLIES, NO HATE AND NO HURTING. I don't know, it's just something that I want to stop. Anyways, I'll end this here. Oh and if you guys can comment on how I blog and stuff, please do so. I'm open to anything as long as its not too negative.Thanks for dropping by, and wish me luck for our school's writing contest, I'm joining there. :)