Maybe I'm just mad. Maybe I'm just Asian (I am!), but I do like FF series--all of them. I can relate to them pretty well. A lot of the theme would never fly with Westerners..but then so was the concept of Kamikaze.
One thing that really detracts from jRPG's experience is their extremely linear story line. It's good for people who are there to enjoy the ride--but not for people who are after branching stories, with lots of dialog trees. In a sense, it's not a Western RPG. You don't get to choose the outcome--and if your favorite character is about to bite the dust, you are powerless to help. That factor alone is a real killer for any jRPGs to a lot of Americans I know. You even fail save the "world" in Star Ocean. Everyone you call family always die in Suikoden, and you always find out the bad guy isn't even really a bad guy--he's always just painfully realistic. That's just not the concept of RPGs that some can stand.
Personally, I like every FF more and more. The older ones were interesting, but marred by lousy dialog. The newer ones pay more and more attention to detail. Your character matter less and less in the world. You were the big shot in FF4. By the time of FF7, you were a lowly SOLDIER. In FF10, you are reduced to a forgotten athelete. In FF12, your character didn't even leave a mark in the game world. Sure, Ashe won. But so what? Nobody remembers Vaan, except his close friends. Personally, these move toward a more "real" world is more immersive, not more dialog options. The world actually exist, and like the real world, it doesn't care about you.
Talk about the story, I find that it is very jarring to have the silent protagonist up against strong, speaking casts. But character's relationship becomes much more intimate over the years. You can see that they bond more than in older FFs. New character actually seems to interact to each other, not just the quest that you are undertaking. A feature so well praised in games like Mass Effects.
I find the game play more engaging as the game grows as well. I adored FF5's turn-base combat (that was my first). I love FF6's customization even more. Then I got to try Tactics and FF7, and I love every bit of it. (Did people even realized there's a materia in FF7 that allows you to press a button at the right time to always pull critical attack? I bet not.) FF8's gun blade was also extremely awesome. Sure, drawing magic was a drag, but pumping bad guys full of Irvin's Quick Shot is ever so satisfying. Also, did you realized, again, that you can "trigger" everyone's attack to get a critical hit? I only found that out on my 2.5th play through. It became a breeze when everyone always hit for critical damage all the time. And did I mention much more engaging?
FF12 was the true pinnacle in combat system. I totally fell in love with Parasite Eve's pseudo real time combat, as well as Vagrant Story. FF12 is very reminiscent of those games for me, and I love every bit of it. I love pulling combos, and seeing enemies getting diced.
If you are all about the reward versus investment, then jRPGs are not the game for you. Imagine them more as an interactive novel. Some feel they are outdated, but I always find them refreshing. Especially when it says something about the world.
FF7's nature vs artificial theme wasn't there by accident. And so wasn't the memory and nostalgia of FF10. (There was a big debate around that time about renewal of extreme nationalistic movement, and Korea was up in arms wanting apologies for Japan's cruelty during WW2). The very theme of Final Fantasy resonate with us Asian and our current event. I am sure it will continue to be so, and it will provide ever more refined game play, more attention to details, and I will continue to enjoy them.