Why are only women exploited by sex films?

if women are "exploited" then exploitation occurs on BOTH ends. there is porn out there where men are tied up and sodomized or otherwise abused (such as slapping or stepping on the balls or body) etc. At the end of the day almost everyone in the industry CHOSE to enter. they may succumb to the "anmal" of the business which requires you to do whatever is popular (such as anal and rough sex) in order to keep relevant or keep being asked to do scenes. Only upper echelon porn stars are able to dictate in any form. so in that way they are exploited BUT they ultimately chose the life and both male and female porn stars do things they may not want to do in films because it is asked of them. you think every male porn stars likes slapping women in their face with their penises or hands??? (i mean i sure do :), but i think you see my point). in fact if you look at some BTS (behind the scenes) you will realize that a lot of these guys are far from perveted as they may seem on camera. to them it's just a job, and once they finish bussing, they towel off and are on there way. it's the same for both sexes. unfair to say women are the only ones exploited. plus female performers make more money anyway (though males [heads of companies and fans], ultimately run the business and dictate what is "in")