Specifically, less high paying manufacturing (labor) jobs.

There’s lot of studies that show that marriage rates have decreased because of…

- the decrease in union power

- globalization (offshoring)

- technological innovation

Read them here:

American Economic Institute - https://www.aeaweb.org/articles?id=10.1257/aeri.20180010

Brookings Institute - https://www.brookings.edu/articles/the-marriage-gap-the-impa...