Ditto for me and my bf - we are exactly those heights. I don't get the tall-men-only rule because physical attraction is about the entire appearance, surely? Also, as one of my campiest friends likes to proclaim: everyone is the same height in bed. In all seriousness though, I do find it easier personally to relate to people around my height (and weight LOL) - perhaps because those people are literally on/around 'my level'.