I had discussed it with my wife. I didn’t want her to feel obligated to do so, and I know it would be awkward at her work to change her last name, but ultimately she wanted to - so I guess that’s one reason?
There is a degree of closeness from it that I think some people appreciate. If you all share a last name, perhaps you feel closer as a family? I’ve known some people that don’t share the same last name as their kids, or people that went double-barrelled, but didn’t with their kids, and some of them had either changed later, or regretted not having the “same” name.
She’s right and all…
But will it actually matter? The public voted for a pedo rapist felon. Surely if the triple threat is your pick for president, to be considered “incompatible” you would have had to do something truly horrific.