Because I'd like to think that we put people in prison when they are danger to others or the society. Someone selling pirated copies of Office is neither. Fuck,I'm a software developer and I wouldn't want someone selling pirated copies of our product to go to prison. Especially not for 3(!!!!) years. Especially not in an American prison. Maybe my complaint should be with the ridiculous system that allows this to happen though - there's plenty of other punishments that could be used instead of locking someone up for three years.