Speaking of 'old farts', I'm still younger than 80% of The Rolling Stones and always will be.
Once or twice a year? That must be excruciating! And what's wrong with a guy walking up and reminiscing a little with you, and sharing? Now there can be obnoxious people at gigs, of course. But I'm not sure this sounds like that. Just sounds like someone who might have been interested and/or stirred by what you were doing.
The context of the previous posts was people talking about age, the point was someone lamenting how old they are when they really aren't very old, my follow up was not about sharing war stories, but the perspective some people attach to being "so old" when if fact they are missing out on the prime time...