This is a great post; I must have missed it first time 'round. It's fascinating reading everyone's personal insights (and evolution).
In the beginning, I just wanted a decent pipe; something with a touch more quality and robustness than the $15 (local) shop pipe I discovered the hobby with. I purchased a new Peterson Aran 68, and as my once-a-week hobby-smoke became a 3 times a weekend habit, I soon thought I needed two pipes to rotate between. And, as the habit grew, so did the collection... my new goal was to have a couple (quality) seven day sets.
Then my wife and daughters (with liberal encouragement from the boys at the local B&M) discovered pipes are both assesories and collectables; so I got to play with certain shapes, sizes, styles, and manufacturers. This allowed me the chance to grow beyond my beginning prejudices that I was soley a classic smooth, bent billiard guy--as I soon favored smoking sandblasted/rusticated Cherrywoods/pokers (even though I might still bitch that they're a bit too rustic Americana for my [lack of] style; as I happily puff away on one, writing this).
So, it evolved (like a rash): "Oh, I guess I do like straight pipes... Hmm, these vulcinate stems can be a pain; wow, I own all vulcinate stemed pipes... Military mounts and spigots are convenient! I guess I'll have rethink my position on them... Man, Ardor can really build a pipe. I wonder if other Ardors smoke as well... blah, blah, blah, excuse, excuse, excuse..."
And then, after several years, you're sitting on several dozen pipes.
I would be fine with a 21 set of pipes that I'm satisfied with; those certain pipes that just smolder along all Goldilocks and chill, fitting for my personal taste. My search has slowed the older I've become and set in my preferences; but, still, I've set an allotment of 100 pipes. This has helped me (and my wife) to become much more selective in accruement process.
Damn, seeing the number '100' in print seems rather over-indulgent.