I plan on moving out of my dorm room without telling my roommate anything.
Why are you moving out of your dorm without letting your roommate know?
He is dumb, crazy and annoying.
It is good to move away from a roommate that is hurting your schooling. Find someone you are compatible with.
He cries all the time, which is making me feel bad. I'd rather have a roommate that isn't useless.
I understand you're really annoyed with your roommate. But you need to communicate this with them and be up front that you want to move out. Not doing this could put him in financial hardship, and that would be unfair to him.