Saying that being attracted to 2D doesn't mean being attracted to 3D is not only a retarded cope but also a complete lie. For starters, when it comes to sexual attraction, you cannot compare it with playing games or consuming other entertainment where what's being stimulated is your conscious mind. You could say that with games your brain's reward centers are being stimulated, but it is not like they can understand that the content they're being stimulated is violent or not, so the violence is meaningless to them. With that in mind is understandable that you can choose whether you'd act violently or not in response to such content, given that it is your conscious mind the one who's interpreting said contend and taking care of the decisions you make after it. This just doesn't happen with sexual impulses and attraction. You can say that you have your reasons to only like 2D lolis and they might just be completely valid and function for you, like they are immature or that they still pee and poop, but they are just a matter of preference/standards instead of attraction, like when someone says he only likes girls with a certain skin color, personality traits or political inclinations, and as such, they do not change the fact that you like children, albeit, idealized ones.
And you DO like children, because what's causing your sexual response are children. It doesn't matter if those children (well, it does from a legal standpoint but that's not what we are arguing here) are real or not because those sexual impulses that you have, again, can't really differentiate one from the other as they only go by pattern recognition to function. This is a fact, and is literally the only reason drawings/anime work, as our pattern recognizing brains fools itself into thinking those lines and colors are actually humans (check out pareidolia). Not only that, the brain is so quick to recognize patterns in this matter that it does way before you consciously realize those images are fake. This means that when you see a 2D loli, you both see it as a child and feel aroused by it BEFORE you have the time to consciously decide if it is acceptable for you to be aroused by it or not given your stated preferences.
So yes, you don't go for real children for X reasons (being cucked by modern western society is the main) but you ARE attracted to children, and in the end that undoubtedly makes you a pedo.
