I think many of us are just swayed by wanton lust for basses, I know I certainly am. 🙄
Sometimes your tastes change, sometimes your body changes and what you hope will be the last bass you'll ever buy turns out to be just another bass.
As other members have commented it's all good clean fun and if a buyer (of a new bass) goes into the purchase with their eyes wide open knowing that they're going to take a hit if it doesn't work out, fair play to them. If buying used, you can just move it on for the same price you paid for it. Happy days!