Do you think I should report my roommate?
What do you think will happen to your roommate?
He will get kicked out hopefully.
You should try to work things out with your roommates. People might think you are petty if you just complain and make no effort to work the issue out.
I don't care. He's a loser.
You shouldn't want to hurt your roommate like that. Most people would expect you to try working things out with them before resorting to such a thing as a report.