$10 million is not enough. I need at least several hundred $million, maybe even a few $billion, so I can:
* buy tracts of farmland in various locations in all continents.
* build underground shelters in each.
* stock with genetically unmodified seeds.
* stock with farm equipment and light manufacturing capability.
* hire minions -- mercenaries, farmers, machinists, engineers, medical professionals, etc. (no lawyers, politicians, preachers, priests, rabbis, gurus, community activists, etc., need apply...)
* have a fleet of LOW-tech boats and planes, so I can get to one or another when TSHTF
* stock with nubile young ladies and hunks. All atheists. Religious need not apply.
* all for now, I've got to get to work on the first "chump change" million.
Or maybe I could just buy my way into what the U.S. and other governments have already constructed for themselves under Washington DC, Denver CO, etc.