CGI has become over used in my opinion. You see a battlefield flooded with 500 cgi soldiers and it all looks fake. You see a plane being brought down by a missle and it's totally fake and it doesn't look real, compared to the dinosaures in the first Jurassic Park film, or the effects in the Back To The Future movies, or the Stay Puft Marshmallow Man walking down the streets of New York City in Ghostbusters.
Take a look at the last three Star Wars films, episodes 1, 2, and 3. So much over usage of computer animated graphics left a bad taste to people's mouths. Did George Lucas really need a lot of those scenes to be cgi?
I don't mind cgi as long as it is not over used, which sadly it is.
As for the animated movies that are all cgi now, I say go back to 2d animation. Nothing wrong with that. Many great cartoon movies were hand drawn. I think there are too many cgi animated movies now.