Yes. Seriously, all forms of animation are just ways of achieving different sorts of styles that can't be done in live action. My personal preference usually lies in things that are a combination of CG and traditional (the last few Miyazaki movies with the exception of Ponyo are good examples of these) but all of it has its place depending on what exactly the director is trying to achieve. Howl's Moving Castle is a great example of both... the titular Castle is almost exclusively done in 3D and would have been borederline impossible to animate traditionally (at least on a reasonable budget). On the other hand, there's a bit in the movie where the characters are cooking eggs and bacon and the traditional animation there can only be described as "showing off" as it's utterly outstanding.