All three were former escorts who latched onto me and left the business.
I didn't really "want" them per se. They just sort of picked me.
I enjoyed their company, but I felt sorry for them and began to take care of them (years apart, not at the same time).
The first one was American (Latina) and wanted to get married, I suppose, to impress her family who were immigrants. She made it clear in no uncertain terms that she was with me because I was a fit/trim 40 y/o Caucasian with a 6 figure income.
The second and third were both Korean and absolutely wanted Green Cards.
What would I want if I did get married?
A loyal, faithful, dutiful, deferential, young beautiful wife for cooking, cleaning and ***, and to take out to restaurants, weekend getaways and nice vacations. The traditional marriage as was known in the US prior to the 1960s. That is what I would want.