You should try read at least one book and then have an opinion based on experience.
Almost all of his books had been transformed in motion pictures. If you think you get scared by the movies, their books are much more scarier. It's amazing how a few words put together can make you visualise all the pain and fear the character is being through.
Some easy reading to start with are: Cujo and Thinner.
Then, if you don't like them, at least you'll have more to say about why didn't you like them.
