fapping to 2D has many benefits
>no porn actors are getting exploited, there's no risk of STD
>drawing/animating porn requires way more creativity and talent
>there are hentai and VNs with actually interesting and engaging stories while in 3D it's just used as very basic setup
>therefore, getting to a sex parts feels rewarding, whether it's clicking through text or actual gameplay, while in 3D porn you get what you want right away
>the voice acting is much higher quality most of the time
>2D girls have their unique personality whether it's archetype while 3D ones are just treated as fucktoys
>they also look objectively better and cuter because they have the element of moe, to quote certain Anime, "moe doesn't exist in three dimensional form", some might say they are idealised, but so are the 3D ones which take lots of surgery
>there's also a lot more extreme fetishes for other people that are much easier to find
>loli is legal in some places