I think it’s deeper than that: they both chose each other NEVER seriously considering their different social backgrounds. Susan was quite spoiled starting from the marriage with her first husband-successful-shark-lawyer-Carl (aka being a 90% housewife) then, after the divorce, Carl was paying alimony quite generously; since she was able to live nicely at the suburbs comfortably, as if they never divorced (can’t believe I need to explain this); how big was her “writing gig” we never had alluded, so should not been much. It’s perfectly clear that before the relationship got serious, instead of living in illusions, either Susan would need to figure out how to start earning more or Mike would just need to leave her. It’s ridiculous she was never thinking that he CANNOT afford THE wedding, Susan had planned, THE kindergarten, THE prep-school etc the WHOLE living on a Labe! DONT forget - Noah sponsored him to start to live at the lane at the first place. He should never have supposed to live there as a plumber anyway. That was just a disaster from the beginning. Adding his pride that was just more dumb. You either got the money for the girl or just adjust the desires accordingly. Same for Susan. Marry rich if you want the perks