I also attempted to play the original Bioshock AND Bioshock II, but I couldn't get into them at all. It bummed me out because everybody seems to love them so much, and this new game just looks awesome. I don't know if it's even worth it for me to play it.
Do you know why you didn't get into them?
If it was something in the gameplay, Infinite
won't be an improvement. If it was something about the story, or how it was presented, it probably was fixed.