I have no fear of heights, but a healthy respect has been instilled in me from various attempts by my younger self to reenact various action scenes from the glorious testosterone fueled action movies we had access to without parental supervision as small kids, it was absolutely wonderful.
Being a parent today and seeing the dull shit my own son will have access to, I don't feel the least safer.. Sure, he might not fall down and hurt himself THERE.. but he also won't learn it there.. where there at least is soft sand below, and where he could have learned many of the dangers of the physical world in a scaled-down and at least somewhat controlled manner.
Remember those spinning things, "roundabouts" or whatever they are called.. Every child who survived one of the more energetic bouts on those things, they know something about centrifugal force and how after a certain threshold, keeping yourself in the center is the only way to avoid bruises.. It gives some general ideas about the mechanics of the world and your body, and your strength.. It improves your ability to move about in the physical world in a safe way.