I'v gone from home assistant to smart things to openhab and its been stable and simple to set & forget.
It's great to setup via the UI, easy to backup and restore as once you actually start to build it into the foundations of your house you start to value the stability of it
I’ve tried developing custom components for HA and it was so bad, there’s no docs at all and Python being untyped language doesn’t help either. Just out of curiousity I’ve googled OpenHab docs to understand if I could achieve similar there and their docs are awesome, full and well written. (and it’s Java so half of the code IntelliJ will write for you)