An old friend of mine has done a parachute jump which he says is life-changing. I have only heard about this second-hand, but he is apparently all-consumed with the life-changingness of this activity.
Personally, I don't want to parachute jump and I don't see how it can change your life. Although it temporarily changes the life of all those who listen to you talking about how it is changing your life.
Am I the odd one out? For I have no big desire to swim with dolphins either, who I imagine have awfully fishy breath. However, I'm quite happy to swim for a bit in a cool canal or pool in the countryside, and then lie down on a grassy bank in the warm sunshine.