I have two kids, I'll probably work until 70 as a result (probably not different from the average retirement age in 1950s). But my point is: it is worth it.
That’s great. But your situation doesn’t scale to everyone’s and you’re still below replacement rate (slightly above 2).
It’s certainly worth it, I agree. But I literally spent my entire 20’s getting financially ready to do so, and unfortunately suffered the consequences due to that.