Another great read on this subject is "The Last Child in the Woods" by Richard Louv. He "diagnoses" the problem as "Nature Deficit Disorder." Great stuff.
IMO, there are several problems facing the legacy issue, and here in rural Texas; they include the Inheritance Tax where large tracts are forced to be subdivided and sold off to pay the taxes on the values of the inherited property. Money will always be the root of problems; multiple heirs typically will not want to share the land with each other and will feel "shorted" if one heir gets value out of the property and they don't. So they force the issue to have the property to be sold to get their share of the property. This is the situation I am involved in; 10 acres and a house left to my wife and her sister, luckily we are in a position to buy the sister's half, as she has demanded her "right to her money" in a property that she has never invested .10 cents in.
Unfortunately, land IS
a commidity these days (to the world, bar permies). When land here in the Hill Country, which used to be deemed useless, was sold for cents on the dollar, is now selling for $10-50 thousand dollars/acre so that mcmansions and "gentleman's ranches" with gated roads can pave off the hilltops and set up camp, complete with a community pool. A person that wants to be close to nature and close to any kind of civilization, needs to carry a sack of money that hangs pretty close to the ground. The legacy heir, would have a hard time hanging on to a property when its value has skyrocketed and the "country side" they grew up with is now utterly unrecognizable.
My neighbor here on 15 acres has tried to have people come and farm share, he offers a room and utilities in his farm house as well a piece of the farms profit in exchange for farm labor, they do eggs meat poultry and rabbits, and vegetables. And as attractive as that sounds he has hard time keeping hands. The type of people attracted to the these types of positions are the wandering type looking for new locales and experience for their future farms. Nothing permanent. Someone who doesn't own the land, even if they are profiting from it, will never treat it or respect it like an owner would.
Also, there is a different mindset today, people are involved in CSA vegetable boxes and buying grassfed beef from the grocery store and feel like thats good enough, that they are doing their part. You are right, homesteading is not attractive, even to those 20% that live in rural areas. Its hard work, and its even harder work to produce enough to sell for a profit. Some do it, many others fail trying to produce enough to support the lifestyle, unfortunately.
But I do hope that its more than just a trend that will eventually faid away; city emigrants are moving rural to get closer to the land and control their own destiny in the shadow of big ag, pharma's, etc. City dwellers "path" to homesteading or rural America will be in the form of food safety, health (mental and physical), and societal (increase in city crime, consumer lifestyle, etc). I think these "paths" will lead them to either hemestead themselves or at least support a local homesteader. I believe that the homesteading lifestyle is not dimenishing. Just look at the increase in number of farmer markets popping up, and the number of city folk that are supporting these types of farmers/communities/individuals...I think (hope) the future is bright.
I am sorry for your current situation and the mental stress that it creates, so good luck my friend, and I truly hope that you find the outcome that will satisfy your concerns.
PS I'm sure there are a few permies here that would gladly be the legacy for your forest farm and would continue in line with your goals for many decades to come