the instincts, urges, and “flaws” that are actually just old survival code.
You already know it's bad for you. The craving shows up anyway. That's not weakness. That's your brain running a program that's two million years old in a world that didn't exist when it was written.
That gut feeling that something is just wrong — it didn't evolve to judge right from wrong. It evolved to keep you away from things that could make you sick. Then it got pointed at people.
Long before it was a sacred promise, pair-bonding was a practical bet — on shared resources, on knowing the child was yours, and on better odds for survival.