I think that I'm one of those few who doesn't really have this extreme view of the other two factions as retard scumbags with no right to breathe this very air. ^^
In PS1 I was TR just because I enjoyed their armor, looks and weapons. In PS2 I'll be NC, just because I enjoy their armor, looks and weapons more so than the TR.
I've never had this extreme "rooting" of a faction in any type of games. In MMO's, FPS's, RPG's, I play what I feel like at any time. I guess that's good for me since I'll be able to experience all aspects of the games that I'm playing.
Don't get me wrong though, that doesn't mean that I doesn't get a sense of competitiveness when I'm fighting another player. That's all there, believe me.
So, the order of most interesting faction for me at this very time is: NC > VS > TR