[He still has his doubts. The sheer level of upkeep the place must take is staggering, and all that just for fun? But it's not worth writing off just yet.]
I've heard someone else wonder if the prison wasn't a front for some kind of experiment. It's not a theory I can completely reject at this point, and it does kind of fit in with what you're saying; we were brought here to be played with and watched, not to protect anyone.