Not in human being or other mammals. It's more beneficial for humans to be in monogamous relationships. This is true for a lot of the animal kingdom. We must care for young, they can't take care of them selves and societally we produce more productive humans in 2 parent homes.
Discussion
Monogamy is not natural!!! Look it up. But if you're convinced it is and all your opinions are based on it, then nothing we say from this point on would get through to the other person. 😄😄