@FireEye: The first time I played ME1, the style, atmosphere, and characters, sucked me in completely. Who me, sleep? ^_~
The first time I fired up ME2, I quit after half an hour. It completely failed to engage me. I have, eventually, come to respect it for what it does do, and I agree the mechanics are mostly better, but I had to force myself to play the game the first time, and I still miss that initial connection that I got from ME1.
And it's not even because Alenko/Williams isn't in it. It's just that, as a story, I didn't buy into any of it, so I didn't really care. What I was looking forward to in a trilogy was continued character development, whether it be the previous squad, NPCs, or Shepard herself, and instead I got 12 new character introductions, and everyone else acting like an idiot. For reasons I need a discussion thread to figure out, rather than getting it from the game.
So, obviously, I have the same problem you do, and it's mostly just that, stylistically, ME2 storytelling doesn't work for me the same way the traditional BioWare model does. And they should be applauded for trying something different, and all that, but I'm glad ME3 will, of necessity, have to be something else again.