When I worked full time, I commuted 45 min one way to work.
It wore me out.
The drive helped me leave work at work, but if I had an evening class, I was away from home for 12 hours since it didn't make sense to go home.
I'd imagine it depends on what part of the country you live in as to average commute. Mine was definitely long for here.
If he goes in to work 5 days, you've just lost 10 hours a week of time with him...and so have your kids.