Same. I just bought a t480 off eBay a week ago while I already have a m2 pro MBP with 32gb RAM. I don’t know what compelled me but it’s just so cozy. By all measures the Mac is superior. Thinkpads are like the vinyl records of laptops.
I like that. I feel similar. I picked it up locally, and while I was driving over, I thought to myself: why am I even doing this, I have a perfect MacBook. But I'm happy I did it. It feels better in a way. Somehow like vinyl maybe, but not as fragile ;-) And my excuse is: can't run Arch on an M1 MacBook.