Do we all have OCD?

Owning two dogs who are free to come and go in and out of the house when they please has a couple of disadvantages. The one big one is that fact that they manage to bring in with them all sorts of crap under their paws. Grass cuttings, mud, fluff, hair, it's all there. Our couches also have duck feather stuffing which comes out between the weave and you end up with duck feathers all over the floors as well. The problem is I have one 'thing', and that 'thing' is maintaining a clean floor and dust free horizontal surfaces. Our floors are both tiled and have floating floor boards so even the smallest piece of dust shows up. It's a daily battle. If we had carpet maybe it wouldn't be so obvious, but as it is, I can't relax unless I pull out the vacuum cleaner and/or the mop and maintain the floor up to "House and Garden" magazine standard. Where does this kind of behaviour come from? I don't think I have any 'issues' stemming from dirty floors as a child, at least I don't think so. It is very nice having clean floors though. Then there is the dusty furniture. As soon as the dust is removed from the dining room table, it's back. If it wasn't done every second day then we'd soon have the amazon rainforest growing directly from the inch thick layer of dust. Where does it come from? Why do other people's houses always look so 'dust free'??