Ha! Speaking of keeping up with guys, when my husband is a riding his fat bike on our daily rides, I have to wait for him to catch up to me on the hills, but only as long as I'm riding one of road worthy single speeds. I outpace him easily on those. When we're both riding fat bikes, though, pretty much a draw. Frustrates me a little when we're both riding fat bikes because he doesn't put in anywhere near the number of miles on a bike in a week as I do. Yeah, guys do have a strength advantage. I think we gals have them beat on endurance, though (and definitely smarts ).
Yeah, I see me riding at 80 and beyond. May not be at my present pace, but I'll be riding.