I am “naturally” monogamous, as in I am perfectly fulfilled with a single partner at a time. A single relationship is just the maximum I can handle. On one hand, I think polygamy makes most sense. Having different needs met by different partners seems so good on paper, the necessity of clear communication is a great boon as well. On the other hand, I just don’t feel like that. I never even had crushes on multiple people at the same time. And being a moral person, I ended relationships when they weren’t working anymore. This to say: some people just “are” monogamous. Not being a cheating asshole is extra, though.