I think half the problem is that people do not treat the rooms as if it were their own home.
Or they don't treat their own homes as well as you'd like - and treat DVC similarly. I treat the DVC resorts better than I treat my own home - but we let our kids eat on the couch, wear shoes in our house, have dog nose prints on the front glass window this morning, track snow through (don't have much of an ability to even try that at DVC), muddy boots. Homes are, to me, to be lived in - and if the carpet needs to be pulled up and replaced occasionally and it doesn't look like a showroom - that's fine for me at home with two kids and a dog.
What I notice about DVC tends to be the stuff that you'd expect from a small apartment that gets moved in and out of every week. Sometimes someone has dropped grape jelly on the carpet. Sometimes there are marks on the wall from someone's suitcase. Sometimes a little kid has gotten the crayons and found the wall (I think that happens at least once in everyone's home if they have small kids). And then there is the drawer/cupboard issues - but that's just a furniture quality issue.