Actually they are meant to be depicted as small for a reason, or at least this is what I was taught by multiple university professors.<p>The reason a depiction of a smaller penis was preferred is that it was a sign of fertility.  Men with smaller penises were seen as genetically more likely to be able to impregnate a woman, and thus was a desired trait at the time.<p>From the second response on your quora link:<p>&gt;The ancient Greeks believed that short penises allowed the man&#x27;s seed to travel a lesser distance before entering the woman&#x27;s body and impregnating her.  A small penis was seen as being more virile.  A long penis meant the seed had further to travel, and had less chance of impregnating a woman.