Ok, let's try to update a little the plot of Mudd's Women.
The three women were living in the most backward corners of the Federation (and really, the few times that we see a Federation world in TOS it don't strike me as a post-scarcity utopia). They weren't happy with their social status (because it's evident in TOS that the concept of "social status" exists) so they looked for a way to improve it. After analyzing carefully all the pros and cons of the various options, they decided the the marriage with a miner was the preferred way to climb the social ladder (because even in the most egalitarian Scandinavian society you have a lot of perks if you marry someone with a lot of money).
Kirk (after warning them that Mudd is, well, Mudd) respected their decision because they are grown-up women and it wasn't his place to decide what was better for them.
Better?