> What exactly is involved with "Setting up macOS" to take you 3 days?

Different needs for different people?

I mean, every time I reinstall Windows it takes some days to me to setup it too (removing all crapware/ads, changing settings in places that doesn't make sense to me, install all my programs without a proper supported package manager [1], etc etc). In my NixOS setup it takes literally minutes if you exclude the download/build phase.

[1]: Yeah, I know about and use chocolatey. Still isn't the same, since for example most programs still use their own update mechanism, installation of packages fail constantly (specially more complicated packages like NVIDIA drivers) and there is some other headaches.