I am using the “same” MacOS installation since the first Intel Mac Mini (2006?). It has branched out to a dozen or so boxes (3 kids, a wife and a TV set etc). I

I am using the “same” MacOS installation since the first Intel Mac Mini (2006?). It has branched out to a dozen or so boxes (3 kids, a wife and a TV set etc). I had to make a clean install on one “leaf” only - a former main computer relegated to video watching (a lot of different video players, torrent clients and such) began crashing once in 2 days. Clean install helped. But to be fair upgrading a Mac computer consists now of adding your old stuff on top of a new operating system, not adding a new operating system on top of your old stuff. But well… I had a problem with USB daemon crashing sometimes (probably related to a famous rewrite of the daemon in C++). And most recently - the most shameful M1 related problem with unkillable screen saver wrongfully started when Remote Desktop is in use. (The bug is shameful cause an unkillable screen saver means that design review, code review, QA processes are all broken, and the fact that it was not fixed in a year(!) - means that tech support process is broken too. Looks scary for things to come. M1 is a great processor though).