Like some others have said, I prefer the challenge. While I don't particularly like NTR, I can consume the content just the same.
What I don't like though, is that NTR games like these ultimately boiled down to "just intentially screw up and unlock the pr0nz!"
If the NTR CGs are all I am after, I'll just look at the gallery or better yet go read a doujin. Why even advertise "If you are a real gamer, you can prevent the cucking by playing gud!" when it ultimately give no tangible reward or just straight up lie and never coded in a good ending in the first place? Maybe that's something the NTR enthusiasts understand, but for me that just subtract points out of the game.
If the point of the game is pure NTR, then do that. As I said, I would still consume that content. But don't half-assed a "Good Route" in when you have no intention of making a proper one. It just leave a bad taste in my mouth and a lot of wasted time I could spend jacking off to something else.