I've spent most of my free time reading up on all the new technology that's been developed since the late 70s and early 80s. Specifically anything to do with cars, since all I knew at home was how to be a mechanic. The hybrid vehicles are interesting, but none of the new cars I've seen have the same feel as my Impala did. All my buddies at home would laugh if they knew that flying cars still aren't part of the future. Maybe one day. I don't recognize much of what passes as popular music these days, but at least the Rolling Stones are still around.
I read up on what operations the Marines have been involved with since my time as well, and wondered if I ever would have re-enlisted if my w things had been different.