Your thoughts appreciated: ... Any reason(s) to run Mojave as opposed to HS? ... no interest in going any further than Mojave.
One year after I made the "leap" from HS to Mojave, I honestly think the only real advantage, for me at least, is Dark Mode. A large part of my decision not go back is that I like Dark Mode.
One thing I didn't like was how many daemons I had to disable with "launchctl unload -w". Apple is obviously trying to turn their computers into phones, and Mojave was a big step in that, with bigger steps in Catalina and beyond, which is why I won't go further, like you. If I hadn't figured out how to stop all those stupid useless CPU-hogging boot-slowing daemons, I might have gone back to HS.
Another problem with Mojave for me (but maybe not you) is that my system doesn't support Metal natively, which is becoming an issue with recent app updates, especially if they're derived from Chromium. (Thank goodness for "--disable-gpu-sandbox".) In fact, even Firefox has been hanging on Google Street View occasionally in the last few months, though I think I may have that under control by disabling WebGL2. The latest software build systems for MacOS appear to be assuming underlying Metal and optimizing for that, oh well.
At least I got Debian Bookworm bootable on another partition and working with my "ancient" 9400m graphics, for when the day comes when I can no longer patch or workaround an incompatibility. That setup should be good for at least another five years, so I'll really have gotten my money's worth out of this mid-2009 MacBook.
