deleuzenotes
There is a tendency to invoke pain as an argument against existence; this way of arguing testifies to a way of thinking which is dear to us, a reactive way. We not only put ourselves in the position of the one who suffers, but in the position of the man of ressentiment who no longer acts his reactions. It must be understood that the active meaning of pain appears in other perspectives: pain is not an argument against life, but, on the contrary, a stimulant to life, “a bait for life”, an argument in its favour. Seeing or even inflicting suffering is a structure of life as active life, an active manifestation of life.

Gilles Deleuze, Nietzsche & Philosophy p. 130

(This other perspective on pain, pain as stimulant to life, is the essence of sorcery)