Domes and Minarets in Architecture

Today when I was following a funny link on toilet signs, I encountered pictures using architectural shapes like domes and minarets resembling 'men’ and 'women' signs for toilets. Then, I could not stop myself thinking of the fact that these architectural shapes which have been very popular in world's history might really be related to women's breasts and men's penises. I know there are other explanations on roots of these monuments as a part of human history such as:

- Dome resembles the sky (as a sign of god) and minaret shows the highest effort of human to get closer to it.

 - Simply dome is the most stable structure you can have for very big open areas (a very large span). This role has been changed after using truss structures. Minaret is the tallest structure with lowest area (i.e., cheapest) that human could build then.  Also minarets have been used for calling for the prayer in islumic world (i.e., athan) which can be covered by a larger area if it is from the highest point of minaret.

- Domes gives people the feeling of gathering under an umbrella of support (from evils by god??) and minaret shows the tininess of human being in the world and also the long way he has to reach the sky. In other words, they impose both feelings of humility and need for protection. 

I believe none of these reasons is wrong. All together serve to explain how these structures have been remaining as human's favorites and are continuing during during  history. But I want to add the idea that it is impossible to ignore or even underestimate the fact that they have been resembling human sexual organs [off course unconsciously].