on a personal level i love how pain is the ectasy to bring me out of my depressions, it just has a certain element that cuts through all of the cold. numb feeling.
there is a ddanger that i could become dependent on this pain/release but i only do it to a degree where i wont be scarred from it and it will heal.
being sensible is the key
i do like Bill Nye so i guess its worth a look