Societies would _not_ be better off if everyone were like Mr Spock, all rationality and no emotion. Instead, a balance - a teaming up of the internal rivals - is optimal for brains. . . . Some balance of the emotional and rational systems is needed, and that balance may already be optimized by natural selection in human brains.
True biblical love is a selfless commitment of one’s body, soul, and spirit to the betterment of the other person.