NTR is an emotional fetish that feels best when it makes sense. The exact degree when it "starts making sense" is different from person to person, but I'd like some agency in that. There's some very popular NTR games where the MC is a mute and just sees everyone around him get corrupted and I can't fucking get into it to save my life. Everyone is stupid, immersion gets broken and the game is just a slideshow of one implausible scenario to the next. Works for some, not for me.
Here it's more how it should be, NTR is a direct result of your actions. Treat your wife poorly, she will find someone else. Feels more...involved from the player side and organic from story perspective? More options how to play the game are always welcome. Nothing wrong for people with different tastes to be given chances to enjoy a game as long as we all get along and don't fight to the point where the developer gets sick of the drama.