[quote name='lolwut?']That's because split-screen is complete ass.[/QUOTE]
Well, when you have your friends over, they don't want to sit and watch you play. It's nice to be able to either have a one on one deathmatch or some kind of local multiplayer...
The only other thing I can think of is buy a single player game, like MGS4, and trade off after each mission (if the missions aren't too terribly long).
[quote name='lolwut?']OP, you're really cheating yourself by not picking up Bioshock. And I wouldn't go as far as to call it a "horror" game; it's not like a Silent Hill or a Resident Evil.[/QUOTE]
I watched the gametrailers review and it looks more or less like a horror game; it's got zombie-like enemies, etc. I don't have anything against the genre of games, but they just don't appeal to me at all. Even though the game looks pretty deep and has a lot of great action, I don't think I could get into it. Also, there are many, many other single player games that I'm more interested in (between the Wii and the PS3, there's like 10 games I want to get in 2009).