
Originally Posted by
Psion
basically, monsters seem to be magical in nature. in FFXIV they drop crystal shards, charged with various energies. said crystals are used in the creation of goods, so naturally there's quite a bit of demand for them. You see this in the storyline too, with the various cities clamoring for crystals and trading with the beastmen, and the tensions brewing between the cities and the beastmen using said shards to summon their primals instead.
In single player final fantasy games though, you don't really see said elemental crystal shards dropping from monsters. sure you get other loot, like bomb fragments and marboro vines, but where are the crystals? The monsters magical energy has to go somewhere when they're defeated - in FFX for instance, you see fiends exploding back into pyreflies and the elements of air/water/earth they were formed of when you beat them. So why wouldn't people in a world of magic harvest said dissipating energy and condense it into something more compact? and in doing so, why wouldnt said energy be used as a form of currency? (which i speculate might be gil in the offline games, and why every monster in said games drops gil.) After all, currency originally was anything of value you could trade for other things of value. It wasnt until later that things like paper money were invented, to serve as a stand in for actual valued goods.
And since it's something that would get used up in the process of using it as an energy source to synthesize items, speed the growth of crops, use as an energy source to power wards on buildings, etc; and since monsters aren't something any average person can go fight, it would prove to be a viable form of currency.
But because it wouldn't be practical to have every mob drop gil in an online game (unless gil was used instead of crystal shards to power synthesis and such, then MAYBE it would work), they had monsters drop crystal shards and left gil as a representation of wealth, just like our paper money is in real life.