That was an interesting read. The first thing that came to my mind is a little weird. I don't know how often this happens to other people, but sometimes when I having my personal porn time, I continue pushing deeper into scarier and darker places of the Internet. I don't know if this is lust or curiosity, but it has landed me in some completely detached and somber places. Then after I'm done. I'm just sitting there completely sober, with a weird sense of satisfaction, but also disgust, confusion and bewilderment. Louis CK kind of explains what I mean. It's not exactly a complicated part of life, but sexual lust and impulse can get really confusing.
I'm not expressing approval or disapproval about watching porn, that's your business, but this video may explain why someone would push the boundaries on what porn they watch.