I'm 4 years younger than my bike. My 650 is the oldest member of my household.
Same with me. I'm 4 years younger than my K1. I don't need my bike to remind me that I'm getting older, though. A lot of my coworkers are in their early to mid 20's. I'm constantly making social references that they have no clue about.
I had a thought a while back that really put the age of my bikes in perspective. When I was about ten years old I saw a '56 Chevy Bel Air in person for the first time. I remember being extremely impressed by the looks of it and thinking that this car was ancient. My 750 is ten years older than that Chevy was then.
Here's a depressing fact that will make you other gen-x-ers feel old:
If the movie "Back to the Future" were made today and set in current times, Marty would only travel back in time to 1981.