I agree that wanting recreation is not selfish --
However, I think your view of a typical husband's life is a little rosy.
A husband has to interface with the modern world, to fight it and survive it, to keep his job, deal with people, etc. and support his family. And in a recession there is a lot more for husbands to worry about. But my main point is that most husbands have plenty to worry about besides their jobs: the house (the building itself), the land/outside stuff/machines, helping with the kids and discipline, and still have some time left over to make his wife feel appreciated. It can be quite difficult to juggle all the various duties at times.
And when the wife is pregnant and needs more sleep/has less energy/can't get around as well, don't think a good husband doesn't take on a bunch of other duties as well: laundry, dishes, diapers, cooking, you name it.
I know that in my case, my wife and I are both horribly busy (except maybe 1 hour before bedtime, which gets later all the time!)
Lastly, I disagree with your statement about "getting a break from hubby". Let's just say that my wife has no dreams of getting away from all of us -- just the kids. Same for me. We actually enjoy each other's company -- we read and discuss books, have pretty much the same interests, etc. and we are each others' best friend. Maybe we're just really lucky?
Matthew