in the final fantasy xiv, to get gil almost depends on the monster drop in dungeon, quest reward, random dungeon reward (after patch 2.2 increased). as for the monster drop in wild, we can ignore it.
generally, the spending of ffxiv gil is routine maintenance, purchasing in ah and expensive house. if you never shopping in ah and don’t want to own a house, gil is useless. while, if you are interested in crating system, the income and expenses are big.
as you can see from this picture, this is the popular ring for tank in ff14 patch 2.1 which has multiple raw materials. even in the late of 2.1 the total cost of ownership is around 30 thousands gil, and the pricing in ah over 40 thousands. while, a causal player who can finish six random dungeon in 3 hours only can farm 4,000,0 ff14 gil (after the patch 2.2 increased the reward). the player who never play crafting system like me only keep 1 million gil at most. but the professional crafting players in our guild and the online time about 3 hours each day can get 100,000 - 200,000 gil. if you start to be a farmer in the game, the bags can not satisfy your wanting. the hundreds ores, woods, metal materials, cloth materials are playing the most important role in the game. all in all, there is no rubbish in final fantasy xiv, all these things you need in crafting system.
anyway, the interesting and funning crafting system makes this game different and real. in addition to upgrade and combat, there are lots of choice can make you happy!