...on an album, like 1-3, would you buy the whole CD?

I don't know why, but I feel like I must have the whole CD. Even if one song is all I like, I buy the CD anyways. Though there are exceptions, I have Sisqo's Thong Song...but I refuse to buy Unleash the Dragon...cause it sucks. But most of the time I just buy the CD...mainly through cheaper means like at Amazon.com or Half.com. I guess it's my ego of building a giant song collection (currently at a meager 838 songs).