In the past, a lot fewer people lived until they were “old”.
So, the deleterious effects of trauma emotions “mattered less”. If you can never sleep through the night without waking up screaming, that is a bad effect. But if you only have a year or two of lifespan left, then you experience less “penalty” than if you had lots of years left.
Now, we ship boys off to war at 18, or even younger. They get PTSD in war, and then live 50+ years afterwards with the bad effects.
So, the deleterious effects of trauma emotions “mattered less”. If you can never sleep through the night without waking up screaming, that is a bad effect. But if you only have a year or two of lifespan left, then you experience less “penalty” than if you had lots of years left.
Now, we ship boys off to war at 18, or even younger. They get PTSD in war, and then live 50+ years afterwards with the bad effects.