People all over the world are so different: they speak various languages, eat different food, and pray to different gods. There are plentiful features which join all human beings together. In particular, humans tend to search for a way out of reality; it is achieved by means of drinking alcohol, taking drugs, gaming, etc.
According to the updated statistical data of PornHub, 962 searches per second were made in the year 2018. Besides, it is mostly watched around midnight, the most popular day is Sunday. Women are not less interested in various genres of porn than men.
After analyzing the above data for a little while, it is very easy to understand that porn content is watched when people have free time or after a hard working day.