Of course you can get a six pack without eating grass-fed. And you could easily live to 90 too, maybe if you spent more on grass-fed you'd live to 99, who knows? Or you could eat grass-fed and get hit by a bus next week, there are no guarantees. The point is, you do what you can afford-if you're buying grain-fed, just get leaner cuts and/or don't eat the fat. I choose to pay the grocer, rather than the doctor, but that's just me, and I understand that some people simply can't afford it.