Interesting thoughts on age groups. I was running an MG TA in my early thirties. I desperately wanted a pre war MG when I was a teenager but could not afford one. I bought a new Morgan because I didn't want to spend time working on the car, breaking down etc and I wanted to keep up with modern traffic. The Morgan meets this criteria with a real vintage feel.
I am sure my kids would love it as a first car but the insurance would be impossible below 25 years.
So I think it's a combination of insurance availability and funds for people under 25.
Lots of younger people love them. I had a triumph spitfire as my first car and the insurance was cheap - but that isnt the case today.
I picked my son up from his grammar school the other day and all the kids walked past saying that car is sick! (Cool) and were waving and shouting at him as we drive past. He loved it!
So they do appeal to the younger generation.