Self-Interest with Sauce: Why Your Finger Isn’t Worth a Million Lives

In How Adam Smith Can Change Your Life, Russ Roberts quotes the Talmudic sage Hillel: “If I am not for myself, who will be for me? If I am only for myself, who am I?” Roberts riffs on this by pointing out Smith’s hard edge: if you would sacrifice millions of lives to save a single finger, you are “a monster of inhuman proportions.”

Which, of course, made me think of chicken tenders. A few nights ago I had the Sweet Thai Glazed chicken at Starbird—fast food so transcendent it felt like a religious conversion, crispy shallots and herb aioli included. I wanted to go back the next day. And the next. My self-interest is crystal clear: eat more Starbird. The problem? My pursuit of gustatory bliss comes at the expense of chickens. Just as my hunt for bioavailable whey protein powders comes at the expense of cows.

So—am I a monster? If I turned vegan, would that absolve me, or would I just uncover a longer list of moral failings still clinging to my name tag? Because the world isn’t eating less meat. It’s eating more, mostly factory-farmed, while pretending not to notice the conveyor-belt cruelty behind the menu. Ignore it long enough and moral numbness sets in, the kind that doesn’t just ruin animals but corrodes us too, spreading in ripples like bird flu, mad cow, or the next “mystery wet market disease.”

And cruelty isn’t the only place where “self-interest” mutates into its evil twin. Consider America’s sacred cow: gun freedom. Other nations see mass shootings, change laws, and reduce tragedies. America, however, doubles down—choosing an idea of freedom that keeps killing us. Here, “self-interest” looks less like wisdom and more like suicide with better branding.

That’s the trouble with self-interest. It’s a slippery little devil with at least two sharp horns. First: it lets us rationalize immoral behavior until we become monsters congratulating ourselves for our appetites. Second: it convinces us that policies which maim us—like endless guns, endless meat—are somehow in our “best interest.”

In reality, self-interest is a hornet’s nest: buzzing passions, compulsive hungers, warped myths, and counterfeit happiness. To live in true self-interest means sorting out the destructive impulses from the behaviors that actually make us moral and happy. But most people never attempt the sorting, because the road to ruin is wide, comfortable, and paved with chicken tenders, while the road to virtue is narrow, steep, and has terrible Yelp reviews.