It's an age thing - the dreams you had when you were younger didn't turn into reality - dreams usually don't. Or at least, not as you expect it. Tech is still really cool, compared to decades ago. But we have so much of it and it is everywhere, that we re-calibrate and think that all this amazing, cool tech is boring. You can get a 3D printer for a few hundred bucks, build it yourself, build a better 3d printer, get…
To your point about 3D printing and robots, we haven’t really moved the needle that much. We’ve made it easy for anyone to print a “cool” robot, sure, but it isn’t necessarily a _useful_ one. As a former “maker” and electronics hack I think lot of maker stuff has devolved into “cool” stuff that consists of wire hangers and servos with RGB lighting and very little actual value. But coolness doesn’t really mean much wh…
That same mindset is ruining many a good hobby. Astrophotography is going down a shameful route where the only thing your peers want to see is the misery of all the debt you have to out fancy someone else.
as for 3d printers.. they have come a long way and have become a core part of creativity and engineering for programs like First Robotics.. hardware is improving, safety is improving, reliability is improving - so much so that if you give up on the creative aspect you can just print away and get started with little effort.