Are we destined to become over-talkative when we're old?

We just met with the guy who owns the auction house where we sold our RV. He’s 80+. After a one minute transaction (signing the title) he ended up bending our ear for over an an hour, about cars and old time combines and trucks and engines and parts and houses, then he’s suddenly be off on another, somewhat related subject, and then he’d back track and spend time trying to remember dates and years, and we could only stand there nodding.
I’m sure he has had a very interesting life, and has interesting stories to tell, but standing in a cramped, tiny office, while he sat and talked didn’t seem to be the right place.
I’ve noticed that many older people seem to take every moment they can to bend people’s ears, very often about their medical ailments, which I hate most of all! But he didn’t do that.
I should note, however, that Rick’s dad, who is 94 is not that way.

So is it something we’re destined to do, and why, or have those kinds of people always been talkers?