For when you want to boast that you run Arch and take those screenfetch screenshots but you don't actually want to properly run Arch because you've got better things to be doing with your time.
I'm a long time Arch user and it's just the best system there is. Pacman with the Aur has literally everything in its latest version. When I need anything at all to be installed, it takes me 10 seconds to type a single command and then I have it.
But sure, if you think the install is difficult despite the billions of user guides, Pop OS would be my second choice. It's really really stable and beautiful and fast.
Chimera [2] is also worth watching.
I've installed Arch from scratch many a time. It's not the setup, it's keeping it working that's the interesting bit.
I have heard that in-place upgrades are getting better but back in my Ubuntu days I never had luck. It seems like you are always going to slowly accumulate cruft that the installer doesn't fix.
Starting with Arch taught me way more about Linux than anything, and also had a factor in starting me on the path of using Emacs, and a tiling window manager.