At age 30, you are still a spring chicken! I retired from teaching when I was 62. I agree things have changed a great deal in this field. The fun is gone. We have so many skills that are necessary for the job. I now spend my time in retail. At my age, and I'm 62++++ it's a good area.    I'm sure with all your developed skills you will make it to an area that you can enjoy.
Good luck!!!!! bet