ughhh I just KNEW reading the OP that this was just some complete and total nit whining about nothing special. OP, please look at the photo you posted, realize why you're a loser and hit yourself.
Your rant included your roommate committing the horrible offences of WALKING AROUND... and EATING HIS FOOD... and ... OPENING THE MICROWAVE DOOR.
You've got something to teach this kid about resilience, that's for sure: