We were born before the invention (1959-1960) of pharma birth control, and were teenagers when it took hold in society. It was the biggest change in human history (I'm not exaggerating). We, generalizing, did an awful job of starting to sort out the moral / ethical / social changes birth control brought.
We lived through the Summer of Love (see the previous paragraph) and some of us didn't get it. To misquote Spiderman, "with great freedom comes great responsibility." Some of us missed that. Hence DJT 45, hence the abuses of celibate clergy, among other notorious members of my generation.
And, fossil carbon release.
We did make the US stop the Vietnam war. That was good.
We made the US get rid of the military draft. That, in hindsight, was bad. Politicians think twice if they have to raise taxes and conscript young women and men before they go to war.
What's going for us? What do we have to offer?
We think in decades, not years.
We made it to the moon.
We invented the internet.
We helped cure the world of sanctimonious horsest like the poem Lewis Carroll parodied: https://en.wikisource.org/wiki/The_Old_Man%27s_Comforts_and_...
Maybe it's self-delusion, but I hope we're not finished doing some good.