This is not a problem. Hardly anyone would have made an issue about this is the internet and blogs and news sites didn't fan the strike-anywhere match who started all of this business.
The gamers who are nitpicking over this Bioshock aspect ratio issue remind me of the citizens of Rapture who tormented over their appearance.
If you are nauseated by viewing the game on a wide screen it is because you are too close to your monitor. The human eye cannot focus on a large area and because the horizontal FOV is the same, although spread out over a larger area, you are feeling nauseated because you are straining your eye trying to take in more than it can handle. Humans are lucky to be able to have a real-life FOV of somewhat less than 180 degrees when facing forward.
16:9 gamers really just need to sit farther away from their monitor if nauseation is their issue. Otherwise, you're just being a baby; Giving 16:9 users an expanded FOV is really just cheating for you, allowing you to see more than the game was designed for. For instance, if 16:9 users had a larger horizontal FOV, they would be able to see the splicer hiding behind the planter in the Medical Lab level of the game, whereas 4:3 users are lucky to spot this denzien because of their tested and approved FOV. Really, 16:9 users are pissed because they don't have an advantage with THIS presentation option, which isn't what a wide screen display is about.
2K is more than justified in their choice for presentation and anyone who mods this FOV or bitches and complains about it needs to find something else to do with their life as they obviously have too much time to spend critiquing something this trivial.