Maybe they can start by taking their wives' last names xD
Some do.
Many cultures the last (and first) names differ by the gender of the name holder, so it makes it even more confusing if you try that.
Notably, both my (now ex) wives insisted on taking my last name. I didn’t really care either way.
[dead]
I offered, but my wife was like "hell no"! So I offered that we create a new last name instead of using either. She declined that as well.