I think a lot of people will have to realize that what we wanted out of Halo PC (the game promised to use since before Bungie was bought by MS) will never truely exist.
Yeah. If the game had have been what was promised then it would have been incredibly fun, but it seems that Microsoft has a not-so-hidden agenda to make sure the Xbox succeeds to the detriment of the PC.
I feel that the story and feeling(!!) shown in the video from E3 was stripped out and they decided to let a 5yr old write the plot. The E3 video of Halo probably showed the most potential for any game so far in the history of computer games (I am being completely serious) - that is why I feel so cheated that Halo became this commercial brainless console shooter.
Halo 2 looks, unfortunately, like nothing more than an extension to the brainless romp that was the original Halo. I remember all the Halo movies from 2000 and how it was so revolutionary... being delayed for about 3 years certainly didn't help (that's a long time for computers). Such a shame.