It’s not selfish, Max just couldn’t save his family from the evil clutches of the Nazis. He probably could have taken the youngsters with him and live with the Hubermanns. If he stayed it would have been loyal, but I’m sure it’s what Max’s family wanted: for him to survive. It was a good thing he left them behind, the only option.Why save none of your family when you can save at least one of them. Max can continue the legacy, finish what they’ve started. If I had a choice to send one of my children away or let him die with me I’d send him off. It’ll be hard. But he’ll be okay.