This might be an unpopular opinion, but I really do think it’s worth it. The media constantly attacks art school as one of the worst financial and professional decisions a person can make. While there is truth in needing to be aware of the vast expense of art school and your potential job options upon graduation, I have never been one to believe that you should make your education decisions based on the field’s potential return on investment. Sure, you need to make money to afford shelter, food, bills — and I’m certainly not suggesting that art school grads can’t afford to live or don’t desire to live well — but I would suggest that a high-paying career isn’t necessarily the motivation for going to art school. Starving artists might be starving, but they recognize that there is something greater than material wealth and comfort. This is just my opinion, though. I’m not an artist, but I have studied the greatest of them for the majority of my life, and I have found a common thread that links the wealthiest of artists and the poorest of artists: the drive to create, not to have.
TL;DR: If you are passionate about your artistic output and you want to go to art school, you should do it. Following your passions and being good at what you do will, in its own way, reap a reward that may be far greater than money or professional success.