The artist draws what sells. Not every artwork is a representation of the artists values, especially not in smut. Or do you believe that a lot of porn actors are also into the all of the things they do in front of a camera? Or a lot of screenwriters are actually into murder and alien invasions? And normal people can totally differentiate between reality and fantasy. There are even women who do actually enjoy shit like this (not as hardcore, though, typically). So what? In reality, Consent is the key here.