[Hankphenom]

It could be a reflection of our hunter/gatherer past, or the human drive to achieve, or any number of other psychologies at work, but it's there, for sure. I love it when somebody declares that they're not a collector and I point out the four or five decorative pairs of salt and pepper shakers on their window sill. "Oh, I just got those when my aunt passed away, and I had always liked the way they looked." Uh, OK. I don't think there are many people who don't have more than one of something for the sole reason that having them gives them pleasure. Like most things, it's a bell curve, with most people like my example above in the middle, and most of us here tending toward the outer edge.