Limits?

I know this is an audio forum but it is the music that drives us, right? I have always had a voracious appetite for music and my music collection reflects this fact. Since obtaining audio gear other than Pioneer recievers and Cerwin Vega speakers I'm seeing my collection grow exponentially.
How do you , if you do, limit or choose your music? I understand that there are 'audiophiles' that have a dozen or so discs that are all they need to survive. Is it space, your wallet, musical taste or something else that dictates the size of your music pool. Are you in or out of control?
There is so much music out there but it is the music that keeps me together.