The game is a lot more than about End Gear, for example:
- Want a big FC/Personal house: Why not Sell Cash-Shop items and use money to buy the house directly. Very fair to the other FCs who were worked their butt off collecting gils trying to buy that nice house that you have earned doing nothing in game for it.
- Got a new rare items/decos to be sold or bought on the marketboard? Why bothering with a normal price when you know Cash-Shop items sellers can afford for artificially overprice. Screw the regular gils earners..
Etc..