If you are 50 years old, your kids are likely to be old enough to get to home by themselves.
Personally I'd hate to work in a place where it would be considered odd to take care of some private business during the day every once in a while. Stretching and leeway goes both ways.
That's not as true any more. I know a number of couples that "started late" and will be in their fifties just as their kids enter the ~10+ year old age range where after-school activities ramp up yet the kid can't drive. People having kids later is probably going to be another of those slow social changes we'll all have to adjust to.
Personally I'd hate to work in a place where it would be considered odd to take care of some private business during the day every once in a while. Stretching and leeway goes both ways.