See fame. The glory of an IRS Auditor comes with the ability to look through the financial reporting equivalent of the Matrix and home in on a detail that brings to light wrong-doings of multi-national corporations who tend to make people's lives stink anyway.
There is also glory on a micro-scale when you are able to find instances when individuals have overpaid on their taxes, and you are actually able to issue a tax refund. Tax refunds are paid by the government when the amount owed by an individual or business is less than the amount paid. You see, even though the money has already been paid, people see tax refunds as "free money from Uncle Sam" and therefore bask in the warm glow of their windfall.