I am not afraid of the idea of marriage. There is nothing I would like more in this world than to have a decent wife. However I know this is not likely to happen for me. So I am alone. But I thought the 12-36 times a year number was very interesting. I have a skewed perspective about sex because I was never married but had two long-term sexual relationships with women between the ages of 21 and 25 (I converted at the age of 26) and we had more sex than greg's number. A lot more. Perhaps both of my girlfriends were nymphomaniacs or maybe all young people are like that. People often say that in marriages the amount of sex declines drastically with time and often after a while married couples have no sex at all. I heard one man tell an old parable about sex and marriage. Imagine you are married. For the first year of your marriage you put a jelly-bean in a jar after every time you have sex. And after the first year of your marriage you take a jelly bean out of the same jar after every time you have sex. Your jar of jelly beans, no matter how long you are married, will never be emptied
From what I have read, frequency of sex among cohabiting/fornicating couples is typically much higher than that of married couples, even of the same age. Something about being married makes people have sex less. Perhaps marriage means that people don't try as hard to please their spouse. Or maybe it's something in the wedding cake.
In my experience of 39 years of marriage, I have not seen a drastic decline in frequency with time. There was a noticeable drop in frequency after the first child, not due to lack of interest but because of lack of time and energy. This was even more pronounced 18 months later after the birth of the second child. We summed up the situation with a joke:
Q. Why did they put a clock in the leaning Tower of Pisa?
A. Because there is no use having the inclination if you don't have the time.
The pattern that I noticed over the years while having seven children was that frequency would increase again once the youngest child got into a better night-time routine, after a year or so. Age of children was definitely the factor with the most influence for us. There would have been times when the frequency was in the 12-36 times a year range.
I have always found my husband extremely attractive and am normally interested in physical intimacy with him. I still feel that way at 60 years of age. We would have run out of jelly beans a long time ago.