That's kind of the main reason we started to write stuff down, to learn things from the past through other's experiences, so that you don't have to feel alone going through every traumatising events as if you were the first human to do so.
We have empathy, better use it than wait for the hardest part of life to "give us a lesson", most of the really hard parts only happen once so you won't learn much, but you'll suffer a lot.
My father who was financially devastated by people close to him passed on one insanely strong piece of advice that is superior to any fairy tale and saved me.
1. Always have a legal agreement at the start even/especially if it's friends and family.
2. Always have that legal agreement reviewed by your own attorney.
Years later I'm finally getting over the sudden violence and the hostility, but the law made sure their plans to intimidate, force, steal and defraud came to nothing.
The people in the past had no youtube and no tv. They still wanted to have some fun.
Does it?
Free of cost for the teacher, not for the student
Many of these stories are embedded idiomatically in many languages? Let each parent decide at what age they should read Rapunzel, when they are ready.