The amazing world of porn

Today I was utilizing the web in the normal way that I do. I search for things and most of the times I find what I'm looking for. Today I found something I was not looking for. While looking for an answer to a completely nerdy problem (event handling in Netscape) I accidentally clicked on a banner to the right of the main text. Low and behold, a popup window opened with links to "fetish porn". My eye caught the text Pregnant dog lovers and I just had to keep reading. I had no idea there were even fetishes like that. Then there were links to Pooping grannies, Crippled shemales and some other weird stuff. How specific does it get? I'm sure there are people that find older women extremely exciting. And I'm also sure there are people that like excrements. But the amount of people that get turned on by the combination must be practically non-existent. So why do they waste money to make that kind of porn?

Oh, and I'm sure I get like a million readers to this just because I use the word porn in the title. And I might even get one or two hits from people that like crippled shemales.