30 years ago, when the Unitarian minister asked that question, my dad was on one side and my mom on the other and they said “we do”. That has come back to haunt me as they were both adopted, “given up” by their original parents. I have felt now like my parents were doing something like that to me. Certainly, they thought I was entering into a good solid situation where they would no longer have to worry about me. It was my second marriage. The first one failed after about 3 years. I had never considered the implications of “Mrs” before. I agree with you.