This thread, of course, devolves into Gym Rats versus Regular Guys.
I can't wait to see the current Gym Rats in 20 years when they've spent the overwhelming majority of that time behind a desk 40 hours a week, dealt with infants, their wives and hormones, more work, four birthday parties every weekend, etc.
Let's see how you feel about hitting the gym when you've worked eight hours a day, then wake up six times a night to take care of your baby, then deal with weekends filled with more kids.