While the prospect of two more years of school may be daunting, you should think of an M.A. as a worthwhile investment in a rewarding lifetime career. Jobs in the art world may not be as well remunerated as other professions, but they offer very high job satisfaction. Art itself is life-enhancing and the art world attracts creative and interesting people. 

Besides, we live in a "credentialed" society. To become a doctor or lawyer you need to go to medical or law school. An MBA will boost opportunities in the business world. A Master's degree is becoming increasingly advantageous, if not essential, for art world professionals.