[It did work for them, but they're a wizard and a time traveler. As amazing as the future is, George doesn't belong in it. They need him in the 19th century, and that's where he wants to live his life and raise children. It would be a difficult adjustment for anyone modern, not to mention difficult to explain. There's no keeping up with the Snape-Joneses.]

And there's no shame in being a bachelor.