It's not, because you're going to want to be farming those delicious divine spheres in the first place. The harder the quest, the likelier the chance of getting them. I have a level 140 Apex Deviljho GQ, and tons of GAFers have level 140 quests.
-Alternis
Eventually you'll have hundreds of spare divine spheres sitting in your box with no use though. The grind from lv126 to lv136 is the worst since it only goes up one level at a time and anything less that beshackled is basically useless.