If you think reading a book is hard, you should try writing one. Because it's even harder. It's still not as hard as writing a game, though. If you discount the purely visual pop-up parts, a book is made almost entirely of words. As a novelist, you just need to think of a few decent strings of words and then fill the other 98% of the book with more or less random descriptions of things and exclamation points.
In defense of games, I want to point out that the writing in plays, including everything by August Strindberg and The Lion King, is 100% pure crap. So we're doing better than they are even though they have the benefit of mostly not being about space marines.
After Psychonauts went on to be very, very popular in Europe, I got busy with my next big project: being unemployed.