No kidding! I used to ride in L.A., and after about my third close call [when I was being good for a change], I decided that riding in the city was far too dangerous.
One that I would never try is base jumping - parachuting from building, bridges, or any low altitude jump. Those guys are nuts! In spite of the odds of serious injury, which I don't recall but were completely unacceptable, I heard one jumper argue that base jumping is obviously as safe as driving your car since many more people die in auto accidents every day.

That was enough for me.
Probably my most thrilling and dangerous experience was to Boogie-Board on a 20~25 foot wave. Based on the distance of the break from shore, which is a pretty good gauge, I was convinced that it broke at about 25 feet. Since waves are measured from the back side where the water is deeper, the face of a wave that size can be 35 feet above the water's surface, or more.
I had grown up spending a good percentage of my pre-teen and early teen summers body surfing and surfing, and at age 20, when in great physical condition, I went after the biggest wave that I could find. It was a hot summer's day, there was a storm down off Baja that was kicking up an awesome southern swell, so I went to the best south facing beach in my neck of S. Cal - Seal Beach. I was the only one in the water as far as one could see and it nearly killed me trying to get beyond the breaks, but finally I managed to be in the right place at the right time. Wow! I'm not even going to try to describe the rush and the power when you fall off the top of the wave, but it was increible. When I tried a bigger one, it broke on top of me and I nearly didn't make it out, but I got one.
Edit: I was just thinking how on Oahu, at the Pipeline and Sunset Beach, the hot dogs all start going home when the waves get that
small.
