Interesting topic, I've been thinking about this myself recently.
I'm off to Bristol, and the hall i'm applying to says it has a music practice room, but all I know is that it contains a drum-kit. I do want to join/start a band when I get up there, but all I have at the moment is a 15W.
Could anyone give me some advice on whether to get something bigger and better now, or if I should wait to see what the situation is like with PA's at venues and stuff?