Fitness is one of the biggest growing fields at the moment. People are learning that in this world, the only thing they truly own is themselves.(and with most people being idiots, that is debatable).
Its a good field, I was thinking of after I get my BA in education, I was gona minor in fitness. And get a PT cert here in a few months anyways.
Besides bro, its not all about the money. Imagine a job where you get paid o give advice on what you love, and to help others better themselves.