Things have changed a lot.
With one income my wife and I put two children through private colleges without putting a serious dent in our savings.
My son and daughter-in-law - both well-paid professionals who routinely put in 10 hour days and six day weeks- couldn't possibly do that for my grandsons and they have two incomes.
College costs, medical costs and housing costs have skyrocketed while incomes have lagged.
That doesn't allow for the level of savings that my generation could maintain.

Well, even though Andy and I both made a conscious choice not to have children, we aren't dead yet :) We obviously realize that the cost of living has gone up. We must be two rare cases. Our incomes have not stagnated. I can't believe that there aren't a few more like us.

I must agree that raising children is extremely expensive. We have lots of friends with children and we do not know how they will ever be able to afford to retire. However, that is a different story.