I wonder if this isn't just one of those things that it is impossible to understand when you are young. Looking back at my childhood diaries, I am always struck by how my entire scope of knowledge was broad, and let utterly limited by my lack of experience. I knew what I knew because I was able to observe it in the world - either seeing it "live", or seeing/reading things in stories, or being taught by convincing authority figures.
Among all those groups I know, for example, that I never encountered the concept of "depression" as an illness. I was sad all the time. But I don't think I knew there was a term for it until I was past the age of eleven.
Not knowing there could be such a thing, and not knowing how to talk about such a thing, all a child can be left with is believing that their experience of their pain is utterly unique to them; and if it's bad, it's probably the worst thing they have ever known.
When you are disabled by any number of things as a child - neglect, abuse, severe illness - I bet you are less likely to even know how to accept that there is a "better" to be found. Even when you are given examples of "better", they are not like you, and so don't represent what you believe in for yourself.
It's provocative to talk about the hope that a child can construct,
@ptsdspouse2b, but I question whether it is actually hope vs. wish-fulfillment, which is a very different thing. I desperately wanted to be rescued. I believed there was a horse living in the woods behind my house that would rescue me. And I knew that also wasn't possible. I would not call this hope, I would call it survival through escape/distraction.
Children learn what they see, hear, feel. If they are not exposed to any reliable source that demonstrates hope or faith being real, I don't know that they can actually access it.
AND for all who are in their teens and twenties, you have the opportunity to significantly reshape/heal your brains' development. Your experiences and reflection now MATTER profoundly.
Now this is just flat-out true, science-based true, and as soon as a child/young person reaches the age where they accept scientific fact, they can accept this. Education matters.