The book was bad - the film is just as bad.

My biggest problem is this...

A man is the only man alive on a planet, and is likely going to die there on his own. Does he get depressed or anxious? no. Does he lament his miserable existence? no. Does he cry about his family, his friends, his previous life on Earth? no. Does he turn to religion? no.

What does he do instead?

He tells jokes and is utterly annoying.

A bad story made into a bad film I'm afraid. And the dullness? This comes from there being one man, and he talks to the camera a lot under the guise of keeping a video log, but really it's a poor way of explaining the story.