I rented it a while back when it first came out for the PS3 and I wasn't really blown away by it. The story and atmosphere were incredible, but i wasnt interested enough to even finish it (which is rare for me). After reading the article in PTOM regarding Bioshock 2, it made me want to go out and buy the game. Should I? 

You're asking whether or not you should buy a game you didn't like?

If you didn't get into it DO NOT BUY IT. If you want to try and get into it again rent it.

How much progress did you make before you stopped playing? It's not an exceptionally long game, so you could probably complete it in another rental if you were so inclined.

You should at least finish the story. Its worth it.

Something else to consider: how much of this game has been spoiled for you? This is one game where the narrative and the execution there of is without equal, but if you already know all the points that the game is going to make, it is pretty less impactful. I'd say rent it to finish it, it isn't really that long.

thats the thing. I didnt get very far into it and no kidnixon, the story remains unspoiled. If i am playing it again however, i do have the urge to purchase it. But with infamous and other games coming up, i just dont know. 

If there are games you're wanting to play more right now, I'd say go for those and then come back to BioShock at a later date. Who knows, it might get a retail discount in the meanwhile, but it will be waiting there.

i guess so. as long as i finish it before bioshock 2.

I recently bought Bioshock, I`m going to finish it soon, but I would advice for you to rent it again and see if you can get into this time, if not then don't buy it.

The story and the narrative are top notch and they way they unfold is really something unique in video games. Now would you kindly rent the game and play it through this time!

I rented and played Bioshock up until the final boss recently. The beginning and build-up of Bioshock were great in my opinion, but the "climax" leaves much more to be desired, what with its extremely frustrating "trial-and-error" moments. Good god. I got all the way to the final encounter and realized it was pretty much unbeatable because I hadn't played the rest of the game the way it had wanted me to. So I quit and returned the game. To this day I still don't know how the ending went. Maybe I'll just look it up on Youtube.

I would buy it, if only to discover the joys of well done videogame narrative. My only real complaint with the game is it's forgiving death/rebirth system, no real challenge....      unless you turn off the chambers of resurrection.

If you didn't get into it in the first place why would you ask others to try to convince you to buy it? I'd say rent it, it can easily be beaten in normal play hours within 3-5 days. Also, Bioshock will remain far better than 2 anyway.