What gives a watch collection staying power?

One thing I have learned from building my own collection is that the pieces I keep longest are almost never the ones I bought because everyone else was talking about them. The keepers tend to be the watches that fit my life, taught me something, or simply felt right every time I reached for them. I have made the usual mistakes. I have bought for hype, bought too quickly, and bought watches that looked perfect in photos but never quite became "mine" once they arrived. On the other hand, some of my best decisions were slower ones: living with a watch in my mind for a while, trying to understand where it fit, and realizing that charm matters just as much as specs. A Hamilton field watch can do that. So can a great Seiko. So can a smaller brand that gets the proportions, dial, and feeling exactly right. I have also found that the more my collection matured, the less interested I became in checking boxes. I stopped worrying about having one of every category and started caring more about whether each watch brought a distinct personality to the table. That shift changed everything for me. My collection got smaller, but it also got better. I would love to hear how others think about this. What is the watch in your collection that proved staying power matters more than novelty, and why has it lasted?