CGI i'm kind of split on. If we're talking about the computer animation used in actually animated movies like Pixar's stuff and now Disney's own animation, I think it actually looks ugly most of the time. I've always felt this way, even since I first saw Toy Story in theaters as a kid. But even the newest and best CGI. It's not the tech that even bothers me, I never even really thought about there being differences in technology as a kid. And I can at least ignore it if the movie is great. It's just the way it looks. If they manage to replicate a hand drawn look using CGI tech, i'm perfectly fine with the tech used. In fact I like what they're trying to accomplish with the Paperboy short Disney made, at least regarding the character designs (the environments still don't look very good though). Though i'm worried they just did it as a test and aren't going to actually use it in any of their movies in the future...
Though that's not to say I think hand drawn animation is always great either. I'm really not a fan of the animation in the 50's and 60's Hanna Barbera cartoons for example (Yogi, Quickdraw, Huckleberry Hound etc). There are also some animated cartoon shows from the 90's i'm not a fan of the animation of either. I am loving the new Mickey Mouse shorts though (for the most part anyways).
I will say give me a Studio Ghibli movie and my hand drawn animation crave will be pretty well and satisfied. Gorgeous they are.
Realistic CGI i'm more split over than animation CGI. I've seen a ton of really horrible uses of it, and it tends to age as well as milk even in the short term (like any of the CGI used in all the Star Wars movies). Though I have seen a few uses where it worked fairly well. Most recently, there were some environments in the Misty Mountains scenes involving wood scaffolding that had some cool looking parts. Though in the same movie, the orcs and goblins were all CGI and looked rather horrid (which is a shame because LOTR tended to use real live actors in makeup for the orcs, which looked great). And while it may yet age horribly like its predecessor, Tron Legacy had some neat looking CGI in places. So it's really a mixed bag, unfortunately containing a lot of rotten parts you have to sift through to get to the good stuff.