the thing here is: VNs are for lonely people and are almost completly harmless while NTR as a concept is not ok to begin with. You for sure know the concept "don't do to others what you wouldn't want to be done to you." so you should understand where i come from.
... maturity is when one understand the different types of perspectives and beliefs others have, instead of forcing ideologies upon another. Different strokes for different folks, let Karma take care of it instead. Enjoy what you want and hate what you don't like, let that be true for other people too no matter how disturbing it may be, they have the right to think what they want cause its their life and thoughts.