> If you have this mythical laptop that lasts 10 years, let me know.

I have 5.

Thinkpads. X220 i5, X220 i7, T420 i5, T420 i7, W520 quad core i7.

All maxed out or nearly, all in regular use. All nearly 15Y old.

The ?20 range was the last Thinkpad series with good keyboards. That's why I stocked up.