Something You're Afraid Of
This one's easy. My biggest fear is that something will happen to my kids. And that scares the CRAP out of me. There was a death at my son's school over Christmas break. She was only 8 years old, and she was in the same grade as Andrew. She was on the way to her grandmother's when she and her parents were hit by a drunk driver. How heartbreaking! As a parent, you just assume that your kids will outlive you. However, I've known way too many parents that have lost a child. And I can't even imagine the heartbreak that must cause.
You try the best you can to protect them, but unfortunately you can't protect them from everything. No matter how hard you try.
So yeah, I'm afraid of spiders, and scary movies, and haunted houses, and roller coasters, and lots of other things. But none of those other things scare me NEARLY as much as the thought of something happening to my kids.