I think tires are better and fewer people are getting flats than before, but I think more people call for service rather than change a tire themselves (presuming they have the tools and the spare tire). This is based on no data whatsoever, just a hunch. We are becoming increasingly isolated from the skill sets required to maintain our own technology, preferring to leave these things in the hands of specialists. I'm a generalist. I have tons of pointless skills!! ;-)
Really? You think people aren't getting flats these days?
I'm all for the progress of technology, which allows us to lose pointless skills, but I bet most people have changed a tire in their life. I don't know anyone around my age (30s) who hasn't.
I'd bet almost half of people don't know how to drive stick, but surely most have changed a tire.