You didn't like Avatar? Funny the critics said the same thing yet it made a crap load of money. They only put it down because half of it was CGI, but i thought it was very well done.
Now a days though, for characters, they usually put the actors in the special outfits and record them doing the movements. That way they can get the movements right when they do the computer modeling. So, it really is the actors moving in the shots, only they're covered the with the CGI.
I saw all the Indie's and i have to say, the only one i enjoyed was the very first one. The rest just seeemed to have dragged on.
Decades from now we'll have flying ships with lasers and better camera controls/movements so there'll be no need for it.