There's a saying here that goes like this: never pick a school for the style, but for the instructor. I've been doing taekwondo for 4 years. My instructor, was awesome. He won a statewide sparring championship for 4(?) Years in a row. He was full of energy, lightning fast, young (22ish), and loved weapons and the art.

Unfortunately he quit instructing this past year. He wasn't doing enough advertising, and he just couldn't pay the bills. So he got a better paying job, but unfortunately that meant he couldn't come to my gym anymore, due to conflicting hours. So now our parent gym, brought in a fourth degree girl to run the gym. She knows her stuff, but isn't that good. She is new to instructing, so I am kinda easing her into the groove. For black belts like me (who love demo type stuff), she's not interesting.

With me being a black belt, I am there 6 hours a week, training a bunch of kids and adults. At this point, it feels like a responsibility more than a sport.

I don't like it.

I love martial arts too much to drop out completely, but there aren't any good gyms around. There is a gym in a town close to mine, that used to be part of our gym. I've been thinking about transferring there. 

My question is whether or not is is my responsibility to teach here, or if I should leave. I don't enjoy it as much where I am. I guess what I'm asking more is should I stay loyal to a school because I'm needed here more, or does the instructor truly come before the school?

I understand that this can be perceived more as opinion based, but I'm really just asking if "the instructor matters more than the school", and adding my personal details to it, just for information.