@stux It depends! Minor versions and security upgrades, as soon as I can, major releases, up to a year out (I have a Mac and iOS devices).
Apart from Mac OS 10.15/Catalina, which I lasted a couple of weeks on before jumping straight to Mac OS 11, because Catalina was terrible, and I was happy if it didn't hard crash each day, which was rarely.
@stux When I feel like it, but it's actually every evening before shutting down, so more often than it sounds like!
I actually updated this morning ~4½ hours ago, and there are already 21 updates waiting for me.