Thats because the creators of most NTR doujinshis these days are unimaginative and just copypasta each other. It’s gotten really fucking boring if you like NTR when every single work put out if not completely identical, are predicable to the point of looking for something else to fap to. Its devolved into pandering to actual cucks, instead of ridiculous/borderline hilarious stuff like Saimin Seishidou.