To me Monogamy feels very Natural. I don't have to work hard to stay true in my marriage. And also my earlier relationships. I never betrayed someone and never had the urge to do so. In fact, I think cheating is very wrong.
Nothing wrong with that Ingrid, as the article states it's a choice we all make for our own. I'm happy for you to be happy in a monomagous relationship, it is possible, it is super hard work even.. :)