I think there's some kind of law about that -- like Murphy's law or something. According to this law, every time you mop, someone will spill a drink, tromp in mud or some such thing. It's inevitable! Although, I have to tell you that once your chickens leave the nest, it gets a little better. Then, there's only the husband to continue the mess making ;-).
This is why I quilt and knit. Maybe the only things I do that *stay done* after I've done them. I feel for you.