In fact, I have a refrigerator magnet declaring my nerd-love of grammar. It was a gift from my aunt and uncle and says, "Grammar Ninja: Ruthless, Deadly, Articulate." I think grammar appeals to the part of my brain that likes order, organization, and math. It’s logic meets language—what a wonderful combination.
If you're looking for the best professional text on the subject, check out Mechanically Inclined by Jeff Anderson. It's sure to shake you of any traditional views of grammar instruction and put your beliefs solidly in the power of grammar in the context of writing. This text has been the focus of my grad class and has been the touchstone of my own grammar instruction for the last several years. I promise to share more tidbits from it this coming school year and I roll out my own adaptation of J. Anderson on fifth graders.