BeenBeta, I find your description of your house and routines mildly terrifying.
I am definitely NOT one of life's natural tidiers, and I wish I was. My MIL is. She tidies automatically as she goes along. Doesn't even appear to know she is doing it. We're in a too-small flat and hope to move soon, which will make things better, but we've just got the flat in a non-embarrassing state and so far have maintained it.
However, it is difficult in a one-bed flat with no real outside space. Washing has to be dried on a clothes horse in the kitchen. There is not enough storage and nowhere for storage to go. Those of you with 4+ bedrooms, playrooms, utility rooms etc may find it hard to accept, but it is quite difficult to keep on top of. There is nowhere, for instance, to store a hoover. Not enough wardrobe space, nowhere specific to do paperwork (am a teacher), no extra space whatsoever outside of bedroom, bathroom, kitchen and living room.
I will admit, however, to being pathologically lazy and not making it better for myself.