don’t have children after a certain age (because you will deprive them of a parent
Yes, it's very easy, you'd want to be (at least 40-ish, 30-ish preferred) when getting kids, so you can be there for them physically as an inspiration and rolemodel (playing ball with them, learning them how to wrestle etc) and not just as a grumpy ol man giving advice from a chair

Some of us have had many more injuries than Gere, and will probably not be as spry in our 70s
You'd want to give the children at least 20-30 years before heading off in the horizon, which Gere wont be able to.