my rock band practice is always WAY louder than our performance volume. My 75 combo works fine for playing live (with DI), but quite cut it in practice.
I find that too. I think it's not so much we play too loud, it's more the response of the smaller room. The drums volume dissapates more in a larger venue, whereas they sound huge in the rehearsal room. So our amps are always turned up that little bit more in rehearsals.