I agree with you. I'm a professional budo teacher and have been for about ten years now. I have bits of income from other projects and I get by. (barely!) However, I'm doing what my heart tells me to do and won't mind ending my days continuing the process.
I have started fifteen dojo over the years and always kept a dojo going while working other jobs. Forty-seven years of budo practice and I continue to learn from my students and look forward to growing older while I practice. I'm beginning to understand how to practice now and am excited about learning!