You are right; we took a lot of things for granted (most dangerously, that our government represented our interests). Now that we have the same instability as the rest of the world, don’t expect many Americans to breed; most have sworn it off altogether. We are 1960s Europe now...
My son and his wife are seriously discussing not having children. They don’t know if they can justify bringing children into a world they see as turning to crap. That’s a conversation I never had with my parents.
I’m pretty sure they will have children, but only one or two. My guess is within the next three years.