I am late 30s. Grew up without cell phones, computers etc. Didnt hear about the internet before it was available at the nearby library.
However..
I study computer science. I love tech, gadgets etc.
My theory is though, at some point, my interest drops and i just stick with what i know. Just like i stopped caring about tv, popculture, fashion etc etc
You get other things to do, and less time for the fun stuff.