Obviously, there is going to a huge variation among people. Some might jump in and say, "oh, my wife did five last night and we do this every day!!!" Cases on the extreme are not what I am asking about. I just want to get a sense of what people generally do or think is comfortable and acceptable, particularly middle-aged couples. We are a married couple with children and have a family life to live. It's not like we can do anything anytime we want.
I feel many people would feel content with once every few months? Any thoughts and ideas welcome...