“It has to be worthwhile that even if she remarries, it can never ever have the depth and satisfaction that a first marriage can have (for the wife, since she’s not “koreth brith” to a second husband) “
Seriously? I think you exaggerate when you say, “never ever have the depth…” Clearly if the couple is divorcing, there is a basic LACK of depth or satisfaction at least on one spouse’s part.
I have seen MANY people whose second marriages not only had greater depth and joy than the first one even remotely gave them, but even in the case of one who was widowed of a HAPPY marriage, that the second marriage brought them at least as much and sometimes more simcha.