Why do people like the Final Fantasy franchise?
I have no doubt that the Final Fantasy series isn't without it's charm, (My favorite female character is Selphie for God Sake!!) but honestly, as an American gamer, in a world of full western RPG's the Final Fantasy franchise as a whole is quaint by today's standards.
And it's all because when you're playing Western RPG's you're given a certain degree of freedom. The story changes depending on your actions. You almost feel like you're shaping your own destiny, whenever you make a choice and you watch the consequences and repercussions play out....But when you're playing a Final Fantasy game you have NO control over your own destiny, you don't even have any control over the main character's personality traits! You're simply watching a story play out in a very cinematic way and you're just a spectator, watching an interactive movie with little to no interactivity!
And if you're a Japanese Anime hater, you have to endure all the little poorly written, poorly acted, Anime elements to get through a self-contained story that you might not care THAT much about to begin with.