Indeed it seems simple to go somewhere and get that extreme experience but it requires personal drive, courage, preparation as well as time and resources/money.

Sad to admit that not everyone would feel that pumping adrenaline of floating on a cushion of air: Air. The freeing sensations of weightlessness:Water. The joy of completing adventurous trail or footpath in the countryside: Earth…and that’s pity but for most people its enough to have another type of adrenaline that may comes from daily life… 

Is it a privilege nowadays? Only for some who can afford it physically and financially.

Here you go – Worldare list of extreme places and its activities, pros&cons are counted!