I prefer monogamy, while obviously I am no fan of marriage at this stage of my life, why? because the purpose of marriage is for the reproduction of the species and the raising of children.
Now I understand no one person is special, not until you believe they are special. Sex is just an animal desire, but true compassion and love is more for me. If i'm horny I'll just jack off or ignore because it's only an urge it doesn't mean anything to me. My legacy, my family, and my love are what is truly valuable in my life.