I used to be far more minimalist that I currently am. I have found myself accumulating a much larger collection of stuff, although much of it is utilitarian. My collection of bike tools and household tools has gotten pretty big. I have a ton of kickboxing equipment (headgear, boxing gloves, bag gloves, knee pads, shin guards, mouthpiece, and soon a heavy bag). I'm considering getting a second bike so that I'll still be mobile if one is out of commission for a few days. I have too many black metal CDs that I never play, considering that my entire collection is on mp3. However, the physical albums have sentimental value.
I'm only really minimalistic in the sense that I eliminate possessions that I don't use, whereas many are packrats. Also, many people find use for a greater number of possessions than what I have. If I had a TV, DVD player, Playstation, or car, they would sit idle. I don't think I live simply on the basis of any moralistic principle.