what do people think of James Cameron's big budget films? does he waste money or are the big budgets put to good use?

After watching some of his films bigger budget movies, you think that £200 million is a ridiculous amount of money to spend on a film, but when you watch avatar for example its stunning visual effects clearly show where the money went! his films are enjoyed por millions across the world so i think his big budgets garantee him a big profit and also can be enjoyed por us to!