Just Try Having None

We love our pain—if it doesn't kill me, it makes me stronger—even as we do almost anything to be rid of pain—billions upon billions spent each year on analgesics, not to mention alcohol, chocolates, pornography. Pain—the unpleasant visitor who won't go away because he's really not an outsider at all. … Would we really know day without night, summer without autumn, pleasure without pain? Answer in one hundred words or less; take as long as you like