Comparing film Genres

If you count all dramas as one genre, it would be number 1, but we usually divide up dramas into many categories.
Comedy is the most common genre, but there are so many cross-over films (musical-comedy, romantic comedy, action comedy, horror comedy, comedy-dramas, even murder comedies, etc.) that it is hard to count them all. I also think that there is not just one most popular genre because people watch what looks interesting. Personally i think that comedy, horror, drama are the most popular at present because there are more comedy, horror and drama movies which have released. Also most of the movies are now coming from books (books come out before and then if the book has been popular with the audience then the movie would be released).
I think that in the 1930's and 1940's romance was the most popular genre because when you watch old movies you can see that there is a lot of romance being used and at the time the audinece had time to go out with couples and watch such movies, although now everyone is busy and has no time for entertainment. Also i think there was horror aswell because back in the days people loved getting thrilled, and at the time horror was not that thriller whereas now when you compare a horror movie from the 1930's and 1940's to the horror movies now you can see that the horror movies now are more thrilling.