This opinion won't be popular (I'm warning you)
I don't blame the wife for shutting her husband down. He seemed incredibly solipsistic and immature. It was like she was raising another teenager. The wife is painted as a villain, but seriously she was being the only adult in the household. How many people would drop everything, sell the house, and move to Manhattan of all places so their almost 50 year old husband could pretend he was was young again and be a musician. She said grownup things like: we won't be able to afford living in Manhattan (most people wouldn't); we have a house and we won't get much if we sell (most people would be concerned about that); what about our daughter (again, this is something most adults would think about). Not to mention, they've lived outside the city for almost 20 years. It would be a major change in their lifestyle. And what does he do when he doesn't get his way, he runs off with a teenager. How cliche.
Let's flip this around. If the woman had intended to run off to the city to pursue modeling or whatever it was she did 20 years ago, and she ran off with an 18 year old boy she would be called selfish and a whore. Films have a great way of making us forget that this isn't the tired midlife crisis cliche that we've seen done to death in film and in real life. We have slow camera work, drippy music, longing gazes, and suddenly his ridiculous half-baked plan (and predatory advances on a vulnerable 18 year old exchange student) are described as love.
Puh lease.