First of all, that's why I asked for examples. Because I used to have an animated face (CG, but kind of anime-y) as my avatar over there. Let's see if I can find it again...yeah, here it is:
Now, admittedly, it's from hentai, but I liked it because of the art involved. Too much of CG (and anime) was cold and lifeless, and this particular pic had a certain spark/sparkle in her eye that seemed to bring her to life. It was more out of art appreciation that I used it than anything else.
Secondly -- no-one said anything about jacking off. I said, "look at". If I jacked off every time I saw a pretty or hot or sexy or underdressed woman or a little more breast than usual, I'd have to be jacking off several times a day. I'm too old for that shit.
That said, I do like hot and sexy women, be they real, animated, or artfully drawn (Sorayama calls his art "hyper illustration" [although I have to admit I can't get into anything but his pre-Penthouse days]). And I have gotten laid. Married even. Heck, I've even had strippers proposition me, and they know that I'm a pervert.
Finally -- if they really bother you, you can turn avatars off. I think of it as a challenge -- I'm on another board where people change avatars and even monikers more frequently than I do. Sometimes it's impossible to recognize someone, except by clicking on their previous posts link.