I'm going to talk about why monogamy is ridiculous is a personal (not my person) sense as opposed to an evolutionary sense. Monogamy is ridiculous because people aren't unique. We are personas. Combinations of a bunch of different archetypes. We're...complicated enough, in our own way. But at the end of the day...we have to realise that there are people in this world that are very, very similar to us. Who's the person you met that's most similar to you, and how similar are they? Answers will vary...and in fact, most of you probably won't have met anybody all too similar to yourself. How many people do we actually meet in a few decades, though? How many people do we get to know well enough to know that they aren't very similar to us? A few thousand? Up to ten times that, maybe. World population is currently about 6.9 billion...only a tiny fraction of which you actually know. The point is...right now, it is extremely likely that somewhere in the world, there is at very least one person that thinks the same, talks the same, and even probably looks the same as you do. I personally have met some people that are frighteningly similar to me...and that's just out of the handful of people that I've met. The point with all of this is...well, there's the obvious question of what you do in a situation with people who are essentially other copies of you...lacking individualism. If you, say..."fall in love" with somebody, what determines who goes with whom? And of course, "falling in love" with a "soulmate"...it's all just very silly to begin with. What we really have to realise, though, is that regardless of whether or not we are in a group of people that we are similar to, there are, somewhere, sometime, people that are near identical to us. All of us.