Your experience mirrors mine: Arch just breaks way too many things all the time. I feel like I'm a sysadmin. Yesterday, Python 3.6 broke so many things (including my DE). I fixed few things I needed but who knows what else is broken on my system... it's hard to tell since I don't test every single thing that depends on a specific package.

I still use Arch daily because I've set it up the way I like it and don't want to waste more time trying to setup Debian/Fedora/Ubuntu...

I just wish there's some more testing before something so critical, like Python, is unleashed.