Yep. Was out riding trails, and had just gotten back to the trailhead. I took off my helmet, took a drink of water. Some young riders who were at the trailhead saw the grey hair and asked my age. This was a few months before I turned 69. They seemed surprised that I was out riding trails, and riding them on my old steel framed hardtail with 26" tires. They commented they just couldn't picture their fathers doing this. I'll admit, it was an appreciated comment (maybe a "left handed" compliment, but I'll take it), and I ended up feeling good about myself, even if I'm not as fast nor as technically skilled as I once was.