Has anyone hit a child while driving and how did you cope with it?

Prompted by nebule’s question. This is my greatest fear, to strike a child with my car. I hit a small deer a few years ago. I never had a chance to avoid him. I wonder how I would cope with it if it had been a child. They do crazy things at times. Has anyone had the experience and be willing to share? Nebule is exempt from the question if she wants to pass.