Good point, but with everything is considered, such as unmanned exploratory spacecraft/missions, we’ve come a looong way.
Maybe !
I still think manned explorations are necessary.
We should have had working orbital space stations by now. When I say working I mean more then the PR stunts we currently have. There should have been efforts to put launch platforms in orbit, get out of the gravity well. Also there should have been more effort to establish a lunar base. More effort to assay the mineral wealth of asteroids.