I'm a prepper in the sense that we grow some of our own food around here. We also raise chickens, ducks, turkeys, rabbits, worms and bees.
I'm guessing that some things preppers and voluntaryists/anarchists have in common is their sense of independence and a lack of dependence on outside sources to survive. Collectively speaking people are stronger as a group but not all groups are strong. Government has to force' everyone to join their collective because their ideas would be hard to sell in a free market.