Re: Why stick to 14.04?
While systemd has indeed made quite the mess of anything around here non-standard, when the workaround to some "WONT_FIX" bug breaks in turn in systemd rev n+1, saying an upgrade is no cost really misses things like -
it takes a long time to rebuild a complex machine, get all the apps again, set up all the stuff in /etc and so on if the upgrade doesn't quite work (which I've already had happen here).
I'm pretty quick and know a few tricks for getting lists of installed packages for the non custom stuff - some of which still work in the new rev - and editing that huge file to remove the old distro-specific stuff once I spend time learning what that even is, and usually remembering the custom stuff I have (for example, in-LAN discovery checks, monitoring, failover) and getting that all in too. Lots of times that only takes a day or so per machine with the testing one needs to do...
That's not even close to zero cost. That's some real heartburn.