Why all the shouting?|
well, you don't have to worry about using the shift key if everything is capitalized (or lower case). A poor typist might appreciate that.
where i work, on the old dos/mainframe apps, the people entering data were taught to keep their caps lock key on so data was uniform and easily searchable. so entering a name always looked like JANE DOE instead of Jane doe, or JAne Doe, etc.... it meant all their emails would be in caps, which would drive me crazy! But at least they had a reason of sorts.