where do all the matts go?

It's quiet here at work, and when it gets quiet I get philosophical. I have a kid brother named Matt, and I was just thinking: how come I've never run across any old men named "Matt"? Even "Matthew" would do. Of course there's the biblical Matthew, but he's long gone. The oldest Matts I can think of are Matt LeBlanc and Matt Stone.

Where are all the 60-, 70- and 80-year old Matts???