Believe me: Do it. It is an incredible experience, thrilling and fun. Pick a place, plan for it (depending on where you're going, you might need some special equipment like a breathing mask) and do it man.
I've been thinking about a lot more since I posted in this tread and may be going with a friend (who I originally had no idea was into it.) some time in October.
I double dare you.
I will take this dare.