We can certainly invest in kids, but there has to be an expectation that they put in the effort as well and the idea that just because they put in the effort does not mean they will be as successful as another doing something similar. We have to instill the idea that they have a general responsibility to themselves, their family, and their community. We used to have a semblance of this but over the last 80+ this really seems to have gone out the window.
I don't know if we can nail it down to any one factor. I think that there were many small factors that have slowly torn away at the values of personal responsibility, accountability, and others.
The context of the 1940s that I see was a Great Depression following the first World War -- was this "personal responsibility" a result of extreme austerity? I think so. But then, for WWII, we saw men conscripted into the polar opposite of "personal responsibility" -- soldiers followed orders; their sole responsibility was up the chain of command. But when they got home, there were high-paying low-skill jobs available, and blue-collar families could afford to have 5 kids, and a house big enough to keep them, on a single worker's income. Today, it's hard to find that kind of income without extensive skill and experience -- especially when we're factoring in housing costs. Folks in the 1940s didn't need to be nearly so "responsible" as they do today, just to make it with a single kid.
