Much of what you do and what you hope to accomplish is based upon your own playstyle. This playstyle is defined as a combination of your personality, your goals, and oftentimes, your access to both in-game gold and SparkCash.
You could have the never-say-die Heart of a Champion, but if you don't have the financial back up, you'll fall short of achieving your goals. Simply put, Mages need a steady flow of money to be extremely successful.
As you already know, Mages by nature are extremely fragile, a stiff wind can probably wipe out 25% of your HP. So in order to make up for those deficiencies, a Mage must earn enough money to be able to both solo and party comfortably.