room-mate or not...?

am i missing out on anything by never having had a room-mate?
i mean, sure i've shared the room with poo for 2 months or so... but she's not someone i'd consider a room-mate. i could adopt that gurl and not feel weird!

college was at home.. post grad was single occupancy rooms *thank god for that!* and work was living by myself. i always felt that i wouldn't be able to share a room with anyone coz i need a lot of space.
but was watching will & grace last night *DON'T ask me why!* and wondered what it would have been like had i had roomies...

going by what i've heard my friends say of their roomies... i think most of them in real life are psycho.

anyone has anything nice to share about their roomies? anyone managed to be real close friends with a roomie? or is this another of those 'grass-being-greener' aspect that i can do without...?