I lived in the UK and Sweden and both countries had massive private pension systems that you pay into ("optionally"). The state pension is a tiny sliver of that.
In fact, in Sweden I can go look at all my private pension funds in one place; here's a picture of that: https://i.imgur.com/rMw6W44.png
You see the tiny red sliver at the bottom: that's my state pension ("Allmän Pension") which is less than 1,850 USD per month before income taxes. That doesn't even include the inflation that will happen between now and 65 (assuming I will be permitted to retire at 65 which seems unlikely).