Our society tends to place a stigma on having affairs outside of marriage, as illustrated by the recent thread on sex addiction. However, there is growing scientific evidence that chastity is actually a bad idea.
According to Wikipedia, only 3 percent of mammals engage in social monogamy. Furthermore: "The incidence of sexual monogamy appears quite rare in the animal kingdom. It is becoming clear that even animals that are socially monogamous engage in extra-pair copulations."
Also, most of the cute animals are polygamous. This includes cats, squirrels, dolphins, and chipmunks. By contrast, monogamous animals include insects and fish, which are generally not cute. It would seem that there is a strong correlation between cuteness and polygamy. Logically, if we promote polygamy in our society, we will be contributing to the net cuteness of the human race.