Personally, I genuinely have no idea why some people love the idea of NTR so much. It's really distasteful and just overall disgusting.
At the same time, I understand that whether it is by your own choice or to please majority of the audience, at the end of the day, it's your choice to add NTR or not.
I just really hope that when you do, it's purely optional. The idea of it existing is already a massive turn-off for me.