Extreme sports was always a way of entertainment for people. Even if this kind of activity involves big risks, this doesn't stop us from trying. One of the reasons I will be willing to do it is the wish of challenging myself, move the line of what I can do further and further.
Another reason of getting involved in this sports is the felling that you have when you just "jump", without knowing what is happening next, you're letting yourself the maxim level of freedom. Doesn't it sound good? Even if you're in a free fall, the level of adrenaline relised in your body will make you feel like flying. This involves an extreme sport: "just jump and feel"