<3 Thank you. One of the traits that immediately endeared Eleven to me was how he understood that the small things in the Universe are really the important things. He looks out for those who are too often overlooked, and fights for the precious moments that matter in a life - like a shared meal, or a sunrise, or a chance just to be safe with the people one cares about.
So of course he'd stay for the citizens of Christmas- every single one of them.