We wanted to wait

I.M Shukster, the town’s divorce attorney sees an elderly couple enter his office. Thinking they are there perhaps by mistake he goes out and asks them, ”May I help you?” The old man says, “We’re here to see Mr. Shukster.” The attorney replied, “That’s me, but sir, you do realize that I am a divorce attorney.” The old man says, “Yes I know. That’s why we are here: we want a divorce.”
The attorney, a bit surprised, invites them back to his office to ask them a few questions. He asks them to be seated, gets out his legal note pad and says, “This first question is for the husband. Sir, how old are you?” to which the old man replies “I’m ninety two”. He then turns to the wife and says “This next question is for you. Ma’am, how old are you?” to which she replies “I’m ninety-four”.
Still somewhat puzzled as to why they would want a divorce, he then says, “This question is for either one of you. Can you tell me how many years you’ve been married?” and wife pipes up “seventy two years”.
At this point the divorce attorney puts down his pad and scratches his head. “Let me make sure I understand you correctly. Both of you are in your nineties and you’ve been married for over seventy years. What is it that could make you want to get a divorce at this point?” The wife says, “We wanted to wait until all the kids had died.”