...yet I have not seen a single organization that does it as well as Scouts. None. The only equivalent experience to leading a patrol or troop is being a sports team captain or major club leader, and guess what? Those that take those non-Scout responsibilities on are largely either those with the innate talent and drive to lead--or they bring their experience from leading in Scouts. Simply jumping into a leadership position isn't the most effective way to learn leadership. Building self-confidence, self-reliance, and the ability to trust teammates are cornerstones, and those skills "irrelevant to 90% of the population" happen to be rather effective at building those.
Speaking of those "irrelevant" skills: as an Eagle Scout, I'll admit that I haven't had to use my wilderness survival skills yet--and that's pretty much all that I haven't used since I left Scouting. What I have used, though?
[ul]
[li]First aid (in my case, sprained ankle, broken arm, broken foot, deep laceration (glass), second degree burns (boiling water), and probably more that I've forgotten about)[/li]
[li]fire building[/li]
[li]water rescue[/li]
[li]plant identification[/li]
[li]orienteering (map-reading, compass use)[/li]
[li]basic carpentry/construction/metalwork (and all the tool use that comes with it: axe, hand saws, hammer, awl, knife, whetstone, power saws, power drill, Dremel, and plenty more)[/li]
[li]sewing[/li]
[li]cooking[/li]
[li]proper use of gas appliances[/li]
[li]proper care/handling of firearms (and the knowledge/respect that comes with)[/li]
[/ul]and on and on. And that's just the hands-on stuff.