I'm very opinionated about movies. I like to critique them mostly because I like to make them. I understand what goes into making a movie, but a lot of the times its just wasted effort. If we'd stop paying to see stuffty movies, Hollywood would realize that they need to make better ones. So usually, if I can, I like to see movies before friends to tell them whether or not to see them.
Basically speaking, film critic is another one of those "on my list of things to do when I grow up" list.