Hey Folks,
I'm going to lump myself into that younger generation (I'm 33). For those at my age you'd be suprised how many of us there are that have interest in these cars. But, most of my generation (and this saddens me) doesn't know how to do even the most basic care on their current cars, let alone the fiddling necessary to keep an older one on the road or to do a restoration. I find it interesting that the most popular article on my web site (from search engines) is how to change the oil in a toyota corolla.
Now, on top of this, look at the entry prices on healeys. If you want an ok running car it's at least 25K. We don't, as a whole, have the spare cash around to buy into these cars. Heck, I wouldn't have the luxury of messing around with an Austin Healey 3000 if it hadn't been handed to me. I'd still be playing with Jensen-Healeys, late model MGs, and straight six American cars (Original V-8s are now becoming too expensive for many of us to buy in to).
But, give us another 10 to 20 years. Once the kids are gone to college and we have more [censored] around time & money it'll be a different story. I think what we will really start to see is that fully restored and sorted vehicles will retain their values, but those cars that need signiciant work fall to an increasingly smaller population of restorers. As general skills drop across the generation this will become more and more true.
Go survey your friends and find out how many of their kids (or your own) know how to fix and/or maintain anything anymore. If I hadn't grown up as my father's assistant (slave-labor) I wouldn't have the skills either.
Jody