I was shouted by a friend to a lecture many years ago by Elisabeth Kubler-Ross, a Swiss psychiatrist who wrote books and lectured on death and dieing. She said that the Swiss had a saying and she would try to translate it:
" You cannot have the summer without the winter, the day without the night or the sunshine without the rain, and if you could orgasm continuously day and night who would wash the dishes?"
I always remembered that and it was over 20 years ago.