So WHY did Robin want Meri to stick around?

I’ve lost count of the number of conversations where we saw Robin begging Meri not to leave or asking for the umpteenth time if she was sure that dhe couldn’t find a way to work it out with Kody.

My question is: why exactly did Robin do this? What benefit is there to having Meri around? Especially as we know they barely texted/spoke in the Flagstaff era.

Money? It affirms Polygamy as a model? Power? Control? She got the title of polygamist minus the effort?

It just makes no sense.