I want to give NixOS a try sometime, as I like the idea of declaritively defining the system

That seems to be even more convoluted and complex.

“Just one more abstraction layer, I swear!”

I’m a NixOS noob bytheway, so please correct me if I’m wrong.

My arch install is from 2015. It just works, why should I reinstall?

I just don’t have the technical chops nor spare time to make my OS a hobby.

Windows is not immune to this, I tried to get a few years old wifi stick to work and it was a nightmare with different hardware revisions, old drivers that aren’t included in windows, bluescreens and a difference between using the USB 2 and USB 3 ports. With Linux it just worked out of the box after plugging the stick into the computer.

I can’t get sound to work probably on bookworm with an pretty old (10 yrs) system. It’s so confusing between pipewire, pulseaudio and alsa.