I love all the positions but doggie has a special place in my heart.
I don't try to analyse it too much but maybe it's got something to do with the slightly impersonal nature of it . Without the intimacy of the eye contact of missionary or her on top facing you it is somehow akin to anonymous out of control animal rutting. Maybe some of the women feel the same way ,or maybe I'm just dribbling mindless crap. haha

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The Wombat : eats roots and leaves.