You've never read any of Ayn Rand's books have you? If you had you would know that the statement "for the greater good of society" is the exact opposite of Objectivism.

Bioshock's setting was art. The gameplay was good, but the tonics favored the wrench so much it was nearly all I used after the second level. I would have liked to see tonics that changed the gameplay for the other weapons.

As for the little sisters, ya it became a robotic motion to save them after awhile. The first one however, was a somewhat difficult choice, at least for me. You can only make a moral choice like that once though, either you cared enough to save the first one, or you didn't care and just wanted the Atom. I didn't know what reward or penalty I would get for saving or killing the little sisters. Without having prior knowledge of the consequences, why would you change your choice?