I enjoy that extra stability and separation between system and apps, especially as I use a rolling distro as a gamer. Hearing talk about Flatpak I disliked it for the same reasons, but I decided to try it out after Steam Native bugged due to a system library update. I enjoy it now also because it feels good that installing apps don’t get a root password and scatter files everywhere they please in the system.
On servers it’s different ofcourse, Flatpak is basically for desktop apps. Snap is also designed for text mode stuff, servers and IoT devices but there’s the problem with it being controlled by one company.
I haven’t booted Windows since February and at this point I’m afraid to.