As one reads through this forum it doesn't take a genius to recognize that quite a few people are involved in an obsession to have some perfect system that will give them perfect order. Many of the details people obsess over seem to be exceptionally minor, others seem to repeatedly go through a ritual of feeling organized and than not organized, always craving that feeling they have after "getting to 0". I say that NOT as a knock but as an observation and also as a person who knows they can at times be a bit obsessive/compulsive themselves.
Am I alone in seeing this? In thinking that GTD has a strong appeal to OCD types? That a lot of people spend more time perfecting their system than "getting things done"?