I think it's much too easy to earn Gil. Theres so much Gil being handed out that apart from the first few ranks, you dont have to save up for anything.
When i first started playing it actually took some time just to save up for my first scythe to become a botanist, and I felt really good when I got it! It was an achievement and I was proud of my new gear!
Now, even though im only at rank 20, I dont get that feeling from any of my new equipment. None of it is a challenge to get. It makes getting your new set of armour feel pretty worthless, it doesnt feel like a great achievement and it doesnt make you proud to have finally got it.
I think way too much Gil is handed out through guild leves and the main story. Who agrees?