Why is it that monogamy means being faithful to one person, but polygamy involves marriage. One is not the opposite of the other.
Both monogamy and polyamory are natural. In the same way that both heterosexuality, bisexuality, homosexuality and pansexuality are natural.
Both monogamy and polyamory are natural. In the same way that both heterosexuality, bisexuality, homosexuality and pansexuality are natural.