IMHO...
While we don't spend excessive amounts of time training our children (sons as well as a daughter) to learn the homemaking skills, we do feel it will help to make the "living on their own" transition a little smoother or perhaps just quicker.
When I met my now-hubby, he had already lived on his own 12 years and certainly knew how to cook, do laundry, clean, etc. I really value those skills in him -- since I'm not working outside the home, I feel it's my duty to take on those tasks, but it sure is nice when I'm pressed for time or going through one of those busy periods and can say, "Can you make supper tonight?" and he not only "can" do it but can do it WELL.
Our sons, being old enough, are the primary laundry-doers in our house right now. They also do the more "manly" chores with my hubby (LOL) but are learning the basic, all-around chores that keep the household running smoothly. A little here, a little there, and possibly there won't be that moment of panic when they're on their own in the future.
I do agree, though, that it shouldn't be an all-or-nothing thing (academics v. keeping a home). After all, if they don't learn the academic end of things, who will homeschool THEIR kids? <grin>
Lynda