I don’t think I want to get married, unless it’s a consensually non-monogamous thing (i.e. open marriage). I just can’t imagine promising to remain with only one person for the entire remainder of my life.
And I almost definitely wouldn’t change my last name to be the same as my partner’s (though I do intend on legally changing my last name at some point, for my own reasons).
Damian says he doesn’t see himself ever getting married because he doesn’t want to feel like his unstable career choice is holding someone else back financially (which is what his dad did when he was a kid, so he feels strongly about it), and also because he believes that marriage is an outdated institution.