I recognize this will vary depending on how much you self-host, so I’m curious about the range of experiences from the few self-hosted things to the many self-hosted things.
Also how might you compare it to other maintenance of your other online systems (e.g. personal computer/phone/etc.)?
I spend a huge amount of time configuring and setting up stuff as it’s my biggest hobby. But I got good enough that when I set something up it can stay for months without any mainainence. Most I do for keeping it up is adding more storage if it turn out to be used more than planned.