Participation was lower in the 70s (60%), due to most Women not entering the workforce. But ours includes most women, so your point is genuinely incomparable.
No, the kids aren't "all right". I'm not blaming you for this, just pointing out that yes, we have it much, much worse, not even taking into account just how lonely, sick, and poorer we are, per salary, per dollar, and our lack of homeownership (that's an entirely different set of data I'm not posting here).