How to Work as an Extra and Regret Doing It

I have a BFA in Theatre Arts and an MFA in Playwriting, or two degrees that have given me a lot of artistic integrity and zero dollars. As a result, I have lots of part-time jobs that are very peripherally related to my field of interest (if at all). One of those jobs, sometimes, is being an extra in TV shows and movies. I’ve only done this twice, for reasons which will become clear to you shortly.