
What would Michael and Apollonia's married life have been like?
Would Michael have had a happier marriage with Apollonia?
I always assumed that he would have, since Apollonia would have never pushed back against him the way Kay did. She would have kept her head down and avoided learning more than she needed to know about Michael's business. And I doubt she'd ever consider divorcing him, assuming that she's a traditional Sicilian girl who takes her Catholicism seriously.
But at the same time, Michael fell in love with Kay for a reason. She was an assertive intellectual, someone whom Michael could hold a genuine conversation with, and who wasn't afraid to speak her mind. I feel like Michael would eventually miss that with someone like Apollonia.
And regardless, Michael's emotional and psychological decline would be a hurdle for any partner, even someone like Apollonia. She might also have a personality shift when she comes to the US and matures beyond her traditional upbringing. Who knows whether she'd even like Michael all that much when he becomes, in Coppola's words, "a zombie"?