Hey, TK has a point: why would you need a brig at all? A guy in stasis is not going to send signals to his people, activate your Operations officers emotion chip, convince a crewperson to help them take the ship, or bust out of a cell with your Chief Engineer (well maybe that one...).
I mean you wouldn't put every prisoner in stasis (sometimes you need to have someone 'cool their heels', so to speak (crew discipline, or during an interrogation), but why chance a break out? Imagine what a 'stasis jail' could have done for some of the episodes of the Various shows where someone 'breaks out of the brig'.
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"Yes, it's the Apocalypse alright. I always thought I'd have a hand in it"
Professor Farnsworth