What is a fear that you have now that you did not have as a child?

This question was inspired by @mandyfire98.

I was never afraid of heights as a kid. I used to climb trees, ride on roller coasters, work on roofs. When I was about 40 years old all of a sudden I went on the Ferris Wheel with my son. I discovered that heights scared the crap out of me.

What is a fear that you have now that you did not have as a child?
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