Sit in tree's. I don't agree with this concept at all. First you can get a new bowhunter into a bow package for under $300 now. ex. the PSE Nova. A crossbow package is significantly more $. Also I believe what your saying is a young adult can hunt easier with a crossbow becasue in concept it takes less practice to use? If so Ipersonally don't think teaching our children less practice with any weapon is better for them. Last of all I think its our own faults for not getting out kids out in the woods with us at younger ages. We let them sit in front of the tv playing video games instead.
I personally started both my boys on bows at the age of 3. Yes the age of 3. I bought each one of those toy plastic bows with suction cupped arrows. I let them go out back with me in the woods carrying them. I moved them up to a fred bear wheeled bow, then a Golden Eagle little brave bows. My kids know how to shoot instinctive. My oldest is now 17, and he has his own adult compound. My youngest turned 14 last year, and he uses a youth bow, but this season he too will be into a adult sized compound. Both my bows go with whenever they can, and love bowhunting as much as I do. They go inbetween school sports, and girls. So I say its up to us parents to get our kids interested in hunting at a young age.
I don't know what you have against archery hunters, but everything you write you seem to think crossbows are the answer to everything. If you're so willing to push for crossbows to get out into the archery woods, why don't you put that same effort into a bow?