Gil is worthless.

[Nebelheim]

I'll take it off your hands since it's "worthless", but of course, you would cry bloody murder if you were relieved of it suddenly and we'd be seeing yet another thread from you.

Pretty much this if they have so much gil that it's "worthless" they could give it away but then we would still see daily post from them complaining about something else like hyperinflation if the game implemented a system where it becomes a lifeless grind for gil and basic necessities become so expensive that people resort to rmt.