Regarding what the kids/younger generation thinks is cool... Who Cares! I know for a fact the stuff I liked in my late teens and through my 20's is NOT the stuff I like now. Your tastes evolve as you grow up and you also learn some life lessons along the way. One big one I learned was planned obsolescence.
I did the modern muscle thing a few years back. I bought a 2005 Mustang that I really loved and had a blast modding and driving, but then they came out with the 2011 with the new 5 liter, and of course I had to have it. I should have put the '05 back to stock and sold all the go-fast parts, but I didn't. And in the end I actually didn't like the newer one any better, even though it was clearly faster. I sold it before I bought my current house and I decided I wasn't going to get tricked into thinking I need to have the newest "bestest" thing anymore. I pissed away quite a bit of money on new cars, and in the end it's only money, but I'm definitely done playing that game.
I think that's one of the big appeals of the old cars. You fix one up the way you like it and then you have something unique that you won't be enticed into trading to get the new styling, engine, or whatever. Would I like a 6.4 liter Challenger? Absolutely. Am I going to be buying one anytime soon? Absolutely not. Now a modern Hemi in an old A-body... that's what I think is cool nowadays.