Meh. Different people are always going to like different games. I remember being at a LAN party where different people would dominate the game depending on the lineage of the game technology--you get used to something, it feels normal, and everything else seems "wrong". I don't feel any need to convince you that you "should" enjoy Marathon any more than you "should" like the same bands I like.
Of course. I mean, I'd probably enjoy it a lot more if it didn't look like it did. If M2 fixes it, I might try that, but it is a story-based game, so that's got its own problems.