I wouldn't change my Casio Protrek PRG-80T for nothing, More than 16 years and no battery change, Titanium strap and case, solar charging and tough as none of the others, A classic ABC watch (Altimeter-Barometer-Compass) with temperature sensor.
To be honest, I also have a small smart band (latest Xiaomi Mi Band) to complement for all the missing smart functionality. People keep asking me why I wear two watches :-)
How useful is the temperature sensor? On my Garmin 935 not that much, it's too affected by body heat. Unless I'm swimming, this it the only case when it tracks ambient (i.e. water) temperature correctly, and rather quickly.
Since those sensors are say 20 years old design and 16+ years components, its safe to say that their precision leaves a lot to desire. No gps for example to help triangulation or indicate position.
It all may be great for you but depending on your activities one may appreciate higher precision / more capable instruments.
That being said, I used to wear some old Suunto that are probably even worse and I had to switch battery every few years. I didnt mind being 100-150m off in altitude for example in some himalayan treks or skitours in alps since terrain navigation was easy. Stopped with them altogether, for weekends phone is vastly superior and battery is no problem. And since kids I dont do much more situations that actually use such watches.
To be honest, I also have a small smart band (latest Xiaomi Mi Band) to complement for all the missing smart functionality. People keep asking me why I wear two watches :-)