Neatness and cats and/or cat smell. My wife simply can't be around cats or should could have an allergy attack. But, just how nice the home looks tell us a lot about the people living in it. Dirty dishes laying around, carpet that looks like it hasn't been vacuumed in months, etc. It might be weird, but there are folks that don't like any pictures on their walls.
Most everyone we know in our complex knows we are packing to move, so our apartment isn't as "together" as it should be.
As far as taking the shoes off, never/ever even think about that. Sort of funny, but if a person goes to a Boat Show, the seller's/Companies of these new cabin cruisers and bigger, will have a sign posted...……"Please remove your shoes". Once on the boat, a person can completely understand why.