When I went to university, I only lived in the dorms for one semester, as a transfer it was required of you to live on campus for only your first semester.
I lucked out, since i got a private dorm, no roommates, and best of all, a private bathroom.
It actually worked out pretty good, since my bio partner who has a hot female didn't like to shower in a public bathroom, so she'd just come over and shower at my room.
I'm looking to go back to school for next year, art school this time, since i already went to a "real" school. I'll be living on campus, so i'm hoping for as good of an experience as possible. Although I will be 24 then, and it's kind of wierd living in a dorm once again, but since I'll be going to school out of state, I don't really want to invest in buying a house there.