I would use the simple term "martyrdom".

Christian martyrs made suffering the goal, because there was a reward for this suffering after life.

With startups doing whatever nobody has done before is going to involve suffering. No doubt about this, just study the lives of Eintein or Newton, Steve Jobs or Elon Musk and you see constant fighting and suffering.

In fact, if for creating value you must clearly suffer, odds are that less competence to do it than in areas that people identify with pleasure like singing, dancing, fishing or playing footbal. This lack of competence can make your life happier than most people in the middle and long term.

But it is easy to confuse the part with the whole and believe that just because we are suffering, we are creating something of value.