I instructed in Europe before I moved out here and yes I did have not one but three other jobs to keep the roof over my head whilst gaining early experience.
My point though is that if you want to make a career out of it you can, it doesn't have to be just a means to an end. You just have to work very hard to get established in the early stages as do people in many other professions.
And it is often the people with "drems, love and passion" who keep the wages down!