You admitted that you were never married yet you said that "a happy marriage required both partner's input."
During my marriage, I begged my ex to go to a marriage counselor together but she refused. Another thing you are wrong about if the wife is not happy in the marriage, she would pack up and leave. I'm sure that if you ask many of the mongers here, they are not exactly thrilled with the idea of staying married with you. What's worse is that the stigma of being divorced and the high chance that she will end up living by herself for the rest of her life without getting married, especially when divorcing in an old age. I'm sorry, but you have no first hand knowledge in that subject. If you are asking, I am intending to re-marry in a few years, probably be a passport bro.