Genetic predisposition is not a sure thing, so I think most people would still save for retirement, genetics aside. I'm somewhat convinced that I will die young of health complications or social strife in the wake of global warming, but I am still saving for retirement. In any case, I think it is unreasonable to claim that it evens out somehow. It's unfortunate that most people don't learn how strong an advantage it is to be in good health until they aren't anymore.