I agree entirely, medical progress is really the only thing that really interests me, aside maybe material science and engineering breakthroughs (e.g wastewater treatment, etc).

I never got the flying car thing because we can have flying cars. The technology is there, the barriers are more.. social or political, if that makes sense. I sure as hell don't want people flying anywhere near my house in a 2 ton vehicle 20+ feet above the ground at even residential speeds. A nice yard, some trees and maybe a fence keep a runway car out of my living room, not so with a flying one.