I went from years of using Arch to Debian. I’ve been tired of the rolling release system and their massive updates. Maybe I was using it wrong but after years my OS was a giant blob with gigabytes of updates every week. I choose Debian for the same reason as you and also because of the stability. If I want the latest version of a package I use Flatpak.
It just works! Unless there something with Nvidia. Yeah fuck them!
I miss AUR though
If you really go vegan don’t forget to take B12 vitamin supplements. It’s very VITAL and really the only supplement you need if your diet is diverse enough.