Oh I completely agree about safety. There really is no security in this universe full of black holes, meteors, exploding stars, and micro organisms. However a s

Oh I completely agree about safety. There really is no security in this universe full of black holes, meteors, exploding stars, and micro organisms. However a simple bar of soap goes a long way to fight those microorganisms. But the basic physiological requirements of having enough food, water, and shelter are not so arbitrary, though the requisite quanitity and type will of course vary.