BF1942 (2002), Vietnam (2004), and BF2 (2005)
I tried BF1942, Vietnam, and 2. Then I discovered FH for BF1942 back in 2005. I never turned back. BF2 SP really put me off from that game.
FH2 (2005)
All of those gave me 20++ hours to play. Then FH2 came, and I already dumped BF2 for FH1. Pretty sad really, I have to dump all the contents and maps for brand new game that only feature North Africa. Feeling a bit mixed, but in the end FH2 is golden.
BF3 (2013)
Finally I get BF3 as a token of apology from EA over Simcity launch disaster. I bought the premium, played for about 47 hours according to Origin, then decided that its online features and stats is too tedious for a busy young adult like me.
Aside from that I play:
Point of Existence, I heard it from the FH2 community that is predominantly German. Quite nice, but probably I haven't spent more than 20 hours on it, because of FH.
Project Reality, I might have played for more than 20 hours (because each game is tediously long). Started from 2007, when PR is still 1 MB mod. I scoured modDB for realism mod, and this is what I got. Enjoyed every second and aspect of it, except the music.
BF2 Pirates, a very fun mod, sadly riddled with bugs.
AIX, all out fun! Maybe I have spent more than 20 hours on it.
p.s. I am also Asian, I can vouch for that gaming prohibition. But after reaching 18, it no longer applies.