OMG you sound exactly like my own inner thinking lol.

I've always got my mind on preparing for disaster but constantly telling myself don't attract the disaster in the process. My advice, get the chickens but change the mindset. Don't get them just because it's a good disaster plan, get them because there are no eggs you can get from the store that will ever be as healthy as the ones that come from your yard. Get them because chickens are the most fun and entertaining pet you'll own and you'll love it. Get them because God made humans the caretaker of the animals, and we should all be raising chickens instead of supporting factory farms (though I realize meat chickens are not as doable in small settings, but eggs hens are a great start.) After you change you mindset, then you can tell yourself that as a bonus, they are also a great survival plan too.