system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: I don't think humans are meant to be monogamous, it's not our natural inclination

Everyone has the potential to be attracted to different people. We all know a good looking person when we see one. If you never met your current partner, if you have one, you probably would now would be with someone else. People usually have sex with more than 1 person throughout their life. 

The potential for someone to get cheated on is to an extent always there, however small. One of the ways I could see monogamy working is in the following made up scenario which is obviously pure fantasy. If everyone could only be attracted to 1 person during their entire life. Your partner would only like you and no one else, they wouldn't be attracted in any way to no other human. You would never have to worry about them cheating on you because it would be impossible. Obviously there's more to it than that. 

Humans can always change. You fall in love, you disregard your morals, you develop a new philosophy in life, you become a nicer person, etc. Even all the people in the world that are very faithful and loyal and say they would never cheat, they can change too.
gpt
Monogamy evolved in order to create a stable enviorment for children. The leading hypothesis is that Monogamy prevents infanticide, as rather than males killing their rivals children, they protect their female partner and their own children.

As far as Humans are concerned, we've been monogamous since prehistoric times. Since we've been recording history people have been raising children. There are ancient laws that punish adultery. Being monogamous is very Human.