I've met flamers and spammers and control freaks on here too. Control freaks want to control people, not create. They typically do not put forth the highest quality work. They rather take credit for someone else's.

For what it's worth, I think you should take a break from this, find something else to focus your energy on for a day. Try to have a good day so that you can bounce back and keep writing. Writing is clearly important to you, don't let the jerks push you out. If you quit or leave then we're left with these critics and control freaks and no interesting content.