Two kids, we both work full-time. My husband does all the vacuuming, though; and he certainly "does more" housework than a previous generation of husbands would have. He just told me that he considers vacuuming a basic maintenance activity that lets him inspect the house in general (looking for loose nails, wobbly floorboards, etc.).
I will say that my viewpoint on housecleaning changed when I had kids. When we were a couple with no kids, I wasn't anywhere near as interested in doing housework. Still didn't pay for it; I was just much more indifferent to the overall state of the house.