two lesbian twin sisters who are both 25 years old who are in an incestuous relationship with each other is morally okay in my opinion because what they’re doing is completely harmless.
Just because society thinks it’s gross and weird that doesn’t mean that it’s morally wrong.
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.