You don't get it. The reason why Anonymous loves 2D girls is because they are attractive distractions with varying levels of depth, and it doesn't suck the life out of our being, like women often do. That's why we fap to hentai when we don't have a girlfriend and have sex with one when we do.
3D women are sexy and real sure, but they also carry STDs, get pregnant, cause drama, and might suck up money. Not every woman is the same, blah blah, the good ones are fucking rare, especially when you keep in mind that human beings are fucking miserable creatures now. We're racist and paranoid of other people so we coop ourselves up in our houses for a variety of reasons.
It's as difficult for a man to approach a woman as it is a woman to have sex with a man. This is something you need to realize, not everybody is born to be a Casanova or bad boy that society and movies have told you to suck off since you were a little girl.