My wife, there's certain kinds of housework that she just doesn't see as necessary to do in the way that I do. Things like the state of our closet or where things are in the kitchen. I have this almost unhealthily obsessive desire to have things in their place and she just totally doesn't. And this is a potential point of conflict, of course.
There are also many things my wife can't stand about me, and there are certain capacities that she has that are different than mine. The trick is to find compatibilities.