This is unironically the big moral dilemma presented by so much western entertainment media it's nauseating. "Would you pRoTeCt yOuR FaMiLy even if it meant the world/everyone else would die?" and the correct moral position, after much soul searching and garment rending is usually presented as: "Yes, fuck the world, you gotta protect you and your own above literally ALL else." And it's always so contrived, with such manufactured scenarios to ignore the fact that in the vast majority of both real and imagined cases, the better option for the world is also going to be the better option for your family. But constantly pitting the individual and their immediate family's interests over the well being of the community and society is fundamentally necessary to maintain the capitalist mode, so they gotta keep reinforcing that false dichotomy as some kind of universal conundrum that is best answered by being as self centered as possible "for your family."