Is Monogmy Going Outta Style?

Y'all have heard of polygmy, right? When people have more than one partner, in thier bed, more than one person on their mind, more than one person, so that when we get broken we don't have to worry about being all alone.
Y'all know what monogmy is right? When someone only has one lover for their life, or one lover at a time.
In the news you hear about people who cheat. You hear about people who have one really good woman, and another on the side. Tiger Woods and Charlie Sheen come to mind.
So, I must ask, is monogmy going out of style? Is it like clothes, when it's in for one season, and out for another season? Or is it a classic, like a little black dress, or pearls, something that will always be in your closet, something that will never go out of style? Things in our closet can fall into two catergories: things you can rely on in a crisis, and things that will only be there for a time, because of trends, and trends and seasons changes.
Is monogmy like a set of pearls or sillybands?
I think that relationships are a lot like our closets, whether in love or in friendship. We have those friends who flake when life gets bad, like our clothes that rip whenever you move. Then we have the classic friends who never go outta style, the friends who are like black dresses. They save you when you can't think of anything else to wear, and they are always there for you.