Glad to see Mac finally told her. You can't have a relationship and keep something like that a secret and it was a good thing he put aside his pride and realized that. As for them having kids,it's very true the older a woman is when she has a child,the higher the chances are for birth defects. Not sure if the writers would want to go there anyway.
Boy, did that incident provide flashbacks. I remembered the M*A*S*H episode where there was a practical joker on the base (it turned out to be B.J.) and Colonel Potter looked through some binoculars. When he turned around he had thick black rings around his eyes. Radar laughed so hard he fell out of the jeep.