Pleasure.
If you like to tinker, it can be fun change up your apps, desktop, icons, themes and so forth. Or root and toodle around for personal performance speed tuning (rooters are often like a hot rod club lol).
Otherwise, it's about as low maintenance as you can imagine.
The operating system works with caches, just like a browser. And just like a browser's cache can get tangled up and need clearing, same thing here - maybe.
That can happen with an operating system update. In that case, you typically boot up into recovery mode and clear cache, or, back up your stuff, do a factory data reset, and restore your stuff - no big deal. That's also a good trick to get like-new performance if it starts getting sluggish in a year or two.
You can visit a nasty website and get your browser hijacked - clear data for the browser from app management and the problem goes away.
You can get a bad app that leaves popup ads on your desktop. Uninstall it, use Addons Detector or similar, uninstall what it added that you didn't notice.
You can get an app that misbehaves after a while. Apps management, clear its cache and/or data, and sometimes cache and data for related Google services.
Or you can use it for years and never face a lick of trouble and I hear that a lot.
Overall, the less you baby it and try to help it, the more reliable it is.
