[Phoenix Gamma]

Well, the Fal'Cie are these mechanical things beyond human comprehension, so what I took away from it was that they were literal gods, and when they make you a l'Cie, you're supposed to follow through with your mission, and when you do, things will work out in the end, because God(s) work in mysterious ways.

Again, the whole story is reeeeeally just an excuse to show you neat graphics. Square's games really don't hold up well against scrutiny, so you really need to properly adjust your expectations and take their games at face value.