The internal combustion engine is less than 200 years old. Air flight 100 years. Manned rocketry and space flight less than 50. Reusable space platforms less than 30 (within my lifetime... and we have had serious problem with it as it is.)
Given the entire timeline of modern humans as a species, this is a phenomenal rate of technological progress. But faster than that seems like it would be unsustainable.
My parents were born in 1930... before the jet plane, television, and a number of other technologies we take for granted. I'm sure neither of them would say that things are moving too slow.
I don't believe that the human colonization of the galaxy could have possibly occurred at any point before now. I can't see how we are already overdue.
Native XWA.Netter (Nutter?)