What changed between then and now?

After the 1996 plane crash of TWA flight 800 in New York my GF didn't want to fly anymore. So, we would go up to Newport Rhode Island (smallest state in the nation) for our summer vacations.

Newport was the hot spot vacation place on the east coast during the 1800's. The wealthiest Americans from the Vanderbilts to the Astors amongst many others built mansions along the famous Cliff Walk. These were their summer homes and are now all donated to the Newport Historical Association and available for touring. These homes were built at the end of the 19th century to the beginning of the 20th century.

A few movies were filmed in the mansions like the Great Gatsby, True Lies, 27 Dresses and many others. My favorite mansion was called the Breakers it was 70 rooms total and half those rooms were for the help. It was built in 1892 and completed in 1895, it took 2,000 men. Pic below... One thing I always found amazing in the home was that the husband and wifes bedrooms were separate, but ajoined by a door. Her room was 10 times the size of his. She would entertain her socialite women friends and share tea in her bedroom. His bedroom was big enough to fit his bed, dresser and a chair...that's it.....Back then married couples had sex just to procreate, so on average maybe 8 times a year....

We've all done that in a weekend at some point in our lives, I'm sure.

So, in 100-120 years what changed? When did having sex become a sport? Didn't they enjoy sex back then as well? Did they start adding testosterone with the fluride to our water supply? Was guilt the wildcard?