I assure everyone I'm reading every word you post... I really am on the fence, and it seems the jury is still quite undecided on this game.
Did want to point one thing out though: I don't know if I actually wrote it or not (I know I'm walking on eggshells around Halo fans), but I wrote "Halo was probably your first FPS" and published that - What I may/may not have said was "this would be an indicator of your age and inexperience with the genre as a whole, so by comparison you wouldn't really have a good frame of reference".
They also mentioned something to the effect of "No, lol stupid: Halo wasn't mein first FPS, it was Timesplitters 2!" as if that meant something. Halo (late 2001) happened to beat Timesplitters 2 onto the market by less than a year, so yeah, the age of that guy was firmly cemented.
For comparison's sake, my first FPS was Wolfenstein 3D... downloaded Episode 1 as a demo from a local BBS via 2400 baud Hayes-Compatible modem. You mentioned your first, I've mentioned mine: All I'm saying is, I've played all kinds... the games that stood out to me were surely clones of other titles, but they were improved/interesting clones (Shadow Warrior and Blood were gonzo Duke Nukem 3d... or a game like Rise of the Triad for that matter.)
Also a note on Half-Life 2: I also didn't care for Half-Life as a series, yet its spinoffs were amazing. I played far more Team Fortress Classic and Counterstrike (which used to be a free mod) back in high school than I did the core game: Never beat a Half-Life game, never played an expansion, tried many times. To Half-Life 2's credit though, there's a definite art style, mood, and the whole dystopian sci-fi gimmick that I loved in movies and really enjoyed about HL2.
Unfortunately, mood doesn't count for everything when you can't enjoy SHOOTING things in a first person SHOOTER... and as a result devote more time to playing with the physics engine than actually beating the title.