I loathe bra shopping. I think it's because I love sexy underwear so much, yet it's so hard to find it in my size (16-D to 16-DD - not sure what that is in US). I've resigned myself to the fact that I have to spend at least AU$50 for a decent bra. So I tend to wear mine to death.

Despite this, I actually have a large and pretty collection (I also tend to buy cheap bras that don't quite fit for the pretty value).