What is interesting is that most people understand the concept of a plan B when it comes to things like what university they will attend, their careers, their financial safety nets, etc. But they assume their marriage will last forever. As you imply, it’s a big mistake.
I don't think my marriage would be as good if I went into it with an exit plan.
For instance, it would be easier for some things, especially huge things, to be "her problem" instead of "our problem" if I had an escape hatch present in my subconscious.
I think that making the husband socially dependent on the wife is bad for the same reasons making the wife financially dependent on the husband is. You can say that it goes against the spirit of marriage, but I'd say that those things makes people stay in unhealthy relationships.
I was more saying that people don't vow to be together "until I get a few promotions, you get fat, or I contract chronic FOMO-itis". Those who have expectations like that tend to be hurting themselves too.
