I am the same. I decided a few years ago that I really really like the thinkpad t450, and have gradually bought 5 of them online for a total cost of about 300 USD. I may never need to buy a laptop ever again.

Yes, over the past 15 years I bought at least a dozen used thinkpads of the X series (x201, x220, x230 and x1). Most of them are now with other family members and friends (they are now also Linux Desktop user). And I still use 3 of them. One daily, the other weekly, and the 3rd for conferences. Beside that, I am also a fan of the T and yet of the P series. And I have a small collection of thinkpads with the big blue logo from the A and R series, but that's mostly just for fun.