Which do you prefer to experience first, a book or the film that’s based on it? Does it really matter whether you read the book, as long as you enjoy the story you’re watching? And does it matter how far from the original story the film version departs, as long as the general plot remains the same as the one in the book? (Think of the difference between the movie “Willie Wonka and the Chocolate Factory” and Roald Dahl’s book Charlie and the Chocolate Factory, although the more recent film “Charlie and the Chocolate Factory” remains quite true to the book.)
Though I hope that everyone will read at least some of the books on which films they’ve enjoyed are based, I know that’s not realistic. (I still haven’t gotten to Alexandre Dumas’ The Three Musketeers, but did enjoy one of the many movie versions of it. (I will read the book someday!))
I think that it all comes down to personal taste—most books take more than a couple of hours to read, while a movie seldom asks a viewer for more than two hours of their time. Plus, some books do come across more as assigned reading than pleasure reading.