I just watch it for the bad 70’s music.
Oddly enough, not all of it was bad. There used to be an Internet radio station called Fluffertrax that played nothing but the music used in dirty movies. It wasn’t too bad, as they wanted public domain songs that lasted a long time, and had limited lyrics, for the most part.
They also wanted novelty songs, such as Piero Umiliani’s Mah Nà Mah Nà, which was also used for Sesame Street and Benny Hill. The same with Yakety Sax.