For me, it's a balance. Of course I enjoying window shopping online, occasionally finding a particular pipe I decide to buy, usually by selecting four or five candidates and then narrowing it down to one.
However, I buy pipes to smoke, so when I feel I have more pipes than I regularly smoke in rotation, I thoughtfully cull the herd. I have donated some, gifted a few, and mostly traded groups for store credit toward one other pipe I'd prefer.
This keeps me at about ninety pipes, "too many," but few enough that they all get smoked.
I don't want them in storage boxes under the bed or in a closet. Hundreds would not be pleasing, would feel wasteful and like clutter.
Others who restore pipes keep a lot of estates on hand, and that is a different situation. But my current stable of pipes seems to suit me. Yes, I feel I sometimes have too many pipes, so then I cull a group.