I'm not sure that's true. An awful lot of those pilots associated flying with the worst experiences of their lives, and supposedly that's why the expected post-war aviation boom didn't really happen and a lot of manufacturers went out of business.
True, but sad. I believe that kids, when exposed to aviation, "Get it" immediately. Young Eagles is an important thing, but it's not nearly enough. EAA boasts that we've flown 2.3 million Young Eagles since the program started in 1992. However, since 1992, 132 million American kids have turned eight years old (the youngest age for Young Eagles). So, we're flying about 1.7% of kids, once. Even if a full 30% of those Young Eagles kids become pilots, we'll simply be keeping things steady at a half percent of the population.
The barrier isn't just the cost, it's the effort.
"Low barriers to entry" in aviation is someone taking the aforementioned phone, whipping it out and launching an app to order an aircraft that appears in 5-10 minutes and whisks them off to wherever that they don't have to learn how to fly. It is not, and will never be, GA as we know it today. Now, for longer distance travel, maybe a low barrier to entry is being part of a "travel club" that owns some automated aircraft based at the local airport... But again, it's not going to be GA as we know it today. Maybe someday that will help keep airports open for the rest of us.
I fly from the 3rd-busiest airport in the state, and it's the busiest GA-only airport for 51 weeks of the year. There are hundreds of aircraft based there, and while hangars do become available, they're not easy to find. The airport has been advertising lots for lease for a while now, but nobody has taken them up on it... And I guess what you say is probably why.
However, if you look at it as an expensive hobby, it's far easier.
Lots of people have expensive hobbies. Boating, horses, car racing, vintage car restoration, skydiving, shooting, etc all have significant entry and ongoing costs and plenty of people do them. But, only flying is particularly useful - My MIL, for example, is into horses and they cost about the same as my airplane. But, I've never asked to borrow a horse, while she asks me to fly her and other places fairly often and I'm happy to.
Normally GA is never the cost winner, and is only the time winner on mid-range trips (say, 125 to 750 miles). However, if that's the mission and you buy the right plane for it - My plane is about as good as it gets for time/cost per mile and I can beat the airlines on cost for many trips if I have my family with me.
1970s.
Interesting. You can also see that the GA Revitalization Act did have a noticeable effect.
Unfortunately, the Great Recession really burst a lot of people's bubbles WRT whether they should spend a lot of money on a hobby vs. saving it for a rainy day. Here's the GAMA sales data, plotted by year, for GA single-engine piston, multi-engine piston, turboprops, and jets:
View attachment 132773
We'd had things pretty good for long enough that single piston aircraft were doing quite well except for the wake of 9/11, but we still haven't recovered. Interesting how the peak of jet sales was in 2008, though...
I don't think VTOLs are really going to take off, so to speak, and even if they do, there are very few GA airports left near congested cities.
Or maybe we'll finally get to bring Meigs back.
No. The "rising tide lifts all boats" did not happen here... *Only* the wealthy have more money. So, the average people aren't the ones buying airplanes, the rich people are - And they're not buying airplanes that will ever be affordable to average people, no matter how used they get. You don't see a lot of JetStars, Lear 23s, etc flying around because at a certain age, they're so expensive to maintain that you just chuck 'em and get a new one.
Because there are fewer people buying unpressurized piston airplanes, there will be fewer airplanes that become affordable to the rest of us.