For the porn primarily. Plot helps but thats what books are for. Porn and spicy writing and situations are primarily why I play AVNs. With that said one thing I often notice that is missed in these threads is a discussion on character agency. Games where the user/main character has a high amount of agency in a given situation are what ring my bell.
With that said there is a place for really well written/illustrated kinetic novels as well (Looking at you Sinful Summer and Measuring my Cum).
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