Not the person you asked but for me:
It's because they're a documentation mess caught in a release/stable discussion that I don't understand.
Perhaps that changed in the last year, haven't looked into them again since then - but unless there's a trigger (new server setup or official release for example) I simply don't have the time and energy to invest.
Oh that's an approach I haven't even considered, I es always very ... Black and white :D
Thanks for the inspiration, should I find a bucket of time in the future I'll give it a shot!