If you want concrete proof that genetics really is the main determinant with regard to personal longevity, one has to look no further than one of the world’s smartest, richest men, the stock-picking genius Warren Buffett, who turned 94 this past August, born the same year as Eastwood, 1930.How can such a claim be made?Because Buffett, according to numerous legit sources found online, has been eating McDonald’s daily for the past 60-plus years. He also says that he drinks six Cokes a day. We’re not talking about those wimpy sugar-free drinks. Nope. For Buffett, he’s all in with the original ...