Kids ARE very resilient. That's the problem. Therapists know this despite the joke.
As a kid you're so resilient you'll accept anything as "that's the way it is" and so a child will shape their themselves around that world view. Then they grow up with a twisted view of how things are and it requires therapy to unlearn that.
It's like scar tissue on a wound. You healed but you're not quite the same. That wound is now less sensitive to feeling in it's environment and can even be more susceptible to further wounding.
Star Trek was really the goat of "live a whole life of pain for no reason" . It's like Picard and his flute. If these episodes don't make you sad you might be without a soul.