Random Riddle: Happy Prisoner

A man is accused of a misdemeanor, and goes to jail for ten days, even though he is only sentenced for five. He has lousy care and isn’t even fed every day. He is pretty much alone in jail, and is not repentant, nor does he learn anything in jail. However, when he is released, he is happy to have been imprisoned.

Why?
 

Random Riddle: Happy Prisoner