I swear by them.

I have a prehistoric T61 which my dad still uses somewhere in his workshop. I had a T530 that was the best workhorse imaginable, by the end it looked like it was used in a warzone (chassis broken on corners due to falls and drops) and only being covered in puke (story for another day) ended that soldiers career.

The only one that ever died on me was x270 that I used as a spare travel companion but I abused it too much and the motherboard died and I got a replacement x250 too cheap to bother with replacing the motherboard on x270. I miss it tho, for years it was my primary travel laptop.

I also bought my parents some refurbishes t450s that work perfectly and i regret daily not getting more of them at the time.

Currently my primary laptop is t14s. I just wish it had more ram (only 32gb).

I owned dell xps and several macbooks and they all suck compared to thinkpads. Sadly as many pointed out older generations had better build quality (up to T530 was fine imho) but its still best bang for the buck. Its also incredibly easy to get spare parts for them for years.