And as the house ages, you get things like repainting interior rooms, more frequent plumbing issues, major HVAC repairs, roof replacement, repaving driveway, electrical upgrades, remodeling, etc.
We downsized to a townhome to avoid some of that (half the walls are shared, so no exterior upkeep for those; smaller yard; fewer rooms).
It hadn't been done for about 5 years when we moved in, so one of the neighbors spent 200 hours cleaning it up for us. Not joking, 200 hours of labor. Scotch Broom is a literal nightmare.
Soil erosion.
My last house didn't have anywhere near as much land, but there was a fairly steep hill on the back of the house. We ended up having part of the slope dug out and a "seat-height" retaining wall installed, with drainage installed as part of the build, and lots of low-maintenance plantings. Reduced the work from weekly mowing on a slope to occasional weeding and trimming. But, it wasn't cheap to do properly.
Is it good to do these maintenance items? Sure. But also, the house isn't going to come down if they aren't done. You go around your city right now you will find very few homes are actually upkept to this level. Most see the bare minimum to avoid the city fining you for the grass being too long, and many are sold in whatever state they are in.
It can occasionally feel like an endless stream of tasks.