….he notes that monogamy has many advantages as a marital lifestyle (chiefly, it better promotes paternal love and devotion). Monogamy may not be natural, he explains, but “some of the best things we do aren’t those that ”˜come naturally.’”Š” The trouble is that doing those unnatural things ”” learning a second language as an adult, avoiding sugary foods ”” isn’t easy. If we want to live monogamously, we will be more successful, Barash suggests, if we are honest about the biological forces we are up against.