Read this http://www.geekpreneur.com/26-reasons-not-to-use-gtd 3. It feels like a cult If GTD feels like a cult, it might be because David Allen is a minister in a church called the Movement of Spiritual Inner Awareness. The church believes that its founder, Roger Hinkins (who later changed his name to Sri John-Roger), is a Mystical Traveler who has previously appeared as Jesus, St. Francis and Abraham Lincoln. He’s the “J-R” Allen acknowledges at the beginning of the book. 14. GTD doesn’t leave room for spontaneity and creativity It’s hard to be spontaneous and creative when you have to write down absolutely everything you were thinking of doing long before you actually get down to doing it. What if you just feel like going to a museum? Do you have to create a file first or can you go and put the tickets in the folder retroactively?