Implicit in your comment is the idea that no one should ever have any legitimate reason to use a mobile device before going to bed. While I have no doubt many users have to check Facebook one more time or some other compulsive behavior that you imagine, there <i>are</i> users who need to set an alarm for the morning, check what they have to do tomorrow, or even check up on some mission-critical status for work.<p>Some adults use their phones before going to sleep in order to be non-infantile and responsible.