From the files of Random Childhood Memories: I couldn't have been more than 8. My family was on vacation and I remember my parents wanted to take us to some sort of roadside attraction where they recreated the story of the Wizard of Oz. I think the sign said something like "Join Dorothy on her journey to Oz!" or something like that. I can't tell you how it was because I refused to go.
In my kid brain I had some facts. I knew the story of the Wizard of Oz. I knew how Dorothy got to Oz. I knew the devastating power and unpredictability of tornadoes. And there was no way I was going to get into one of them, no matter how safe my parents said it would be. Frankly, I thought they'd lost their minds. How could they assure me that a tornado would be safe?
Of course, it probably was perfectly safe. I was overreacting. I should have trusted my parents. My fault in reasoning as a kid, really, was embuing grown ups with the power to make tornadoes occur on a whim. I know now that they can't really do that. But, you know, I'm not sure my instinct was wrong.
The world is not a safe place, no matter how much grown ups assure you that it is. Grown ups can't always be there to protect you. And they don't have as much power as we pretend they do.
The best thing for it, I have found, is to grow up myself and not count on grown ups to keep me safe. It's a hard thing to face your fears, to prepare yourself, to acknowledge simultaneously how powerful and powerless you are.
In training for this I have ridden roller coasters, eaten sushi, had kids, and a slew of other very scary things.
Now I have children who are sometimes frightened by how powerful and powerless they are. I'm with you.