TEASER: "Peanuts"

A teaser for the new Peanuts movie is out. I'm dreading this movie, because I love the Peanuts, and the idea of turning them into a big CGI spectacle just makes me gag. I mean, we all remember how well that worked out for the Smurfs and the Chipmunks, right? But Charles Schulz's beloved creations ought to remain un-violated by that kind of degradation, if you ask me. But here it is anyway, set for release in 2015- the best I can say is that it looks like they may still resemble their 2D selves, at least. Can someone tell me what the problem is with making a 2D movie anyway? Why do they have to be turned into this?