I don't know about any of you but NOW AND THEN I go to a show and enjoy an opener enough that I buy a cd or so from them, only later to listen to it and really regret buying it, not because it doesn't sound like them live, just the fact that you are now just listening to music at mundane home (unless your home is a fun house or something) and the pleasure of hearing live music is not in the equation. Though not bad music, and listenable (yes i said listenable) it is not buy worthy but far too late to return.
Sometimes I regret NOT buying a cd too though because I was not in the right mood at the time I heard a band but later heard them again and suddenly loved it. So I always worry I will miss out (as sometimes it is hard to get a band's CDs, or tax/shipping free) I'm sure my pack rat nature comes into this as well and my general CD whoring, but no I don't just buy anything, I do have SOME kind of musical taste but I wanted to know if anyone else gets into this problem...