Basic instinct means men are not to be monogamous. That being said we have each created a moral code based upon varying factors and learning.

Whether it is natural or not is irrespective. We have elevated ourselves above basic instinct and therefore its about having the will power to overcome natural urges if you believe that is how you should conduct yourself.

I have a natural urge to piss when im in bed... but i don't, coz i dont want to