It's not just a wife thing. My husband and I bought a house last year and he seems to think that I have tons of time for house projects in between working. He doesn't understand why I can't paint, plumb, stain, plant, weed, mow, blow, etc. while I'm working.
Now that the money shows how much time I'm spending on the house he's getting better about helping on weekends and evenings.
It's really a matter of setting up a system that works for both of you and sticking to it. When hubby works from home it's hard to remember not to interrupt him with little projects or questions I have. But as long as we're reminding each other nicely, it works for us.