True, our kids won't grow up hacking the same systems we did, just like we didn't grow up hacking the same systems as our parents. But there is something basic to the human spirit that guarantees as long as this branch of the gene pool is still around, we'll still tinker and build and create. It's just that the blocks are constantly changing. Which keeps things interesting, and is a good thing.
The trajectory goes: mainframe: one computer, many people personal computer: one computer, one person ubiquitous computing: many computers to many people
If anything, people are going to be programming the shit out of everything in the future, not pulling back.