When I was 7 my family lived in a small development that had lots of young families with children and we had a little gang that would play together during the summer. One morning we saw some parachutes and hang gliders and decided to follow them to see where they were landing. We found the large field where they landed and stood in awe as people came out of the sky and landed safely on the grass. My desire to hang glide was born.
For more information about hang gliding the US Hang Gliding Association is a good place to start.
Update: I came as close to hang gliding as you can get without actually doing it. I went paragliding. It was fun, but I still want to get strapped into a hang glider.
Updated Oct 25, 2016