You would probably find fishing the better DoL. You level up much faster, and even at it's worst you can sell the fish to NPCs for more than you can regular mats. The Leves are helpful too. Min and Bot are a bore - bang-banging away for very little exp, little worth much to sell and the Leves aren't so good for those either.

My real issue with the in-game economy is the restrictive inventory - I am sure it is causing an artificial market flood. There are plenty of things I would have rather kept, and certainly wasn't interested in selling at their piddling prices (either on the market, or to an NPC), but in the end you are forced to capitulate just to get inventory space back.