Roommates suck @ss, period. I've lived w/more male roommates/housemates than I can count. They were either slobs, financially irresponsible, never slept or slept all the time. The list could go on, but for brevity's sake, I'll cut it off there.
Friends make bad roommates and new roommates usually turn into friends...so it's a viscious circle that you can't escape.
If you share the same circle of friends, it's even worse. I'd rather work two jobs (which I do) and have my OWN place than room w/another male.
Eventually, I'd like to cohabitate again. But not w/my current GF, who I can't decide if I want to keep around or not. But that's a diff story.