“Zen is a way of liberation, concerned not with what is good or bad or advantageous, but what is.”
— Alan Watts 
Discussion
It's telling that this idea shows up in so many places. We would do well to heed it. This is my favorite principle from Musashi's Dokkōdō:
Do not oppose the Ways of the world. Some things cannot be changed — the Way of the world, human nature, the past. Accept everything the way it is.
Musashi is great. One of my all time favorite warrior philosophers