Old or young, it's going to take a certain kind of person to want a falling block single shot rifle. As I said above......niche market and always has been. To me it has nothing to do with the semi-auto or tactical craze. Always been hard to sell the Number 1 as a hunting rifle over a good bolt action. It does NOTHING better than the bolt. You either like them or you don't, never been a matter of better. Guys come on here all the time and say "I always wanted one".........but why don't they have one? Because for the price, they aren't better. Just like me, I "want" an Original Henry, but that's a $2000 rifle that really serves no purpose other than I would like to have one some day.
I am 53 years old. My dad absolutely loved Number 1s........I don't. Even though I am all about pretty blue and nice wood, the rifle has never appealed to me. If we want to go strictly on aesthetics and how they LOOK, to me the B-78 Browning or the Wickliffe is a much "prettier" rifle than the Number 1. I have one of each of those, the 6 Number 1s I have left from my dads collection will be sold, just like the others were.
Boils down to appeal and the Number 1 or any single shot for that matter doesn't appeal to enough people to make it viable. At least not for a major arms company that concentrates on the bottom line and volume