On one hand, you have normal porn... with some google-fu (well... bing-fu) and disregard for copyrights, you can find anything you want for free, but you have to jerk off by yourself.
On the other side, you have prostitution, where you pay, and you get actual sex (bj, hj, pegging, whatever you're into and pay for).
And then you have onlyfans... you pay... and then you have to do the deed yourself? why?!