This was totally true when I was in grade school through high school. Though I did want to see the Smurfs movie when it came out, and the Scooby Doo movie still has a place in my childhood, but I'm not a big fan of the 3D Smurfs or Chipmunks. I'd be better off with the original cartoons (and comics, in the case of the Smurfs).
But CGI adaptations seem to be getting a LOT better imo, I mean look at Mr. Peabody and Sherman. Then they got a CGI Peanuts movie coming out some time and the animation there looks a helluva lot like in the old cartoons, which is pretty cool because we're used to seeing the more realistic CG character and movement in movies (like the CGI Smurfs and Chipmunks from some years ago).
Some people still don't like CGI, even I went through a time in my childhood when I got sick of it, but I personally don't mind it these days. Besides, do y'all know how much work it is making a 3D model or even animating it? I found a free 3D modelling program years ago and I tried it, and lost my patience.
But personally, if I was making a live action movie of my own, I'd rather use either puppets or 2D animation for fantasy/cartoonish characters. Haven't seen many recent movies like that aside from the Muppets franchise and the show, Out of Jimmy's Head.
*sighs* Why does everyone make a huge deal out of this? They aren't even canon to the original cartoon. I may not be interested in these movies, but jeez la weez just avoid them. Besides, it's not like everything Hollywood has brought us is bad.