I am a old man and I personally do not think it's morally wrong for me pay a 18 year old woman to have sex with me because me and her are both consenting adults. So what me and her are doing is completely harmless.

Those sex workers that are online could be cops uncover so I don't want to risk that because I don't want to go to jail.

I think two twin brothers who are both consenting adults being in an incestuous relationship with each other is gross, weird and not natural. But it is still morally okay for them to be in an incestuous relationship with eachother because what they are doing is completely harmless.