> life was harder back then, which made people tougher

Unintuitively, harder lives don't make people tougher. Intuitively, they make people more exhausted and traumatized. Look at how functional people were back then when they were elderly (though that could be due to other aspects of health). Look at anyone who has had a hard life; they wear down.

Similarly, children, contrary to some pop politico-psychology, generally grow stronger if they feel safer. Unsafe kids are scared to face the world and often never develop an inner sense of security. Trauma leaves wounds that sometimes never heal. Safe kids feel like they can brave the world, and they internalize that sense of safety that their parents model and give them.

From my experience of growing up around people who lived through war and then repressive regime and poverty, what you describe above is very much opposite to what I have seen.