I applaud how awake the above poster is :)
I think there's more, unfortunately, and it's got nothing to do with human leadership. About ever 10-14k years the Earths poles have a magnetic excursion, triggered by the galactic current sheet which triggers sun activity. The event is disruptive to the Earth causing crustal displacement (earthquakes), tsunamis and winds. The effects are seen in the fossil record, see Suspicious0bservers.com for more info. The coastal cities are particularly at risk.
That excursion has started and is why the magnetic field is weakening exponentially.
At the same time another risk is that as we enter a sunspot maximum a Coronal Mass Ejection (CME) similar to the Carrington event could occur - this one would be bad luck. With our weakened protection because of the magnetic sphere changes, it's impact would be worsened.
So there's other reasons that the old nuclear war underground cities from WWII would be nice to have expanded and linked. Food supply would still be an issue and most of the population would not fit or want to go or be feedable, they'd pick based on priority, but I think they're trying.
For the rest of us, It's a decade or two away but a hobby farm in the mountains isn't a horrible idea. MY RVing indicates that aliens have and will pick up some humans to wait it out. The aliens underground shouldn't have much of an issue as long as the earthquakes don't break their caverns. :)