The biggest advantage of a bunker would be the first year of survival. You can comfortably wait while the population resolves itself, and later emerge with a gr

The biggest advantage of a bunker would be the first year of survival. You can comfortably wait while the population resolves itself, and later emerge with a group of trusted people (agriculturists, scientists, doctors) who are much healthier, loaded with weapons, and available to start a new society.