I think arts are like any other profession... medicine, cooking, law, builder. I am certainly not sure why people think that by doing arts you have to be poor or arts by itself is not a serious profession.
I can assure you that arts can be WAY harder and more frustrating than any other profession. And if done right, it can pay off more more than what many lawyers and doctors earn.
Although for getting to that level you gotta sacrifice a lot and do a loooot of work without seeing any earning for it. But the truth is that you do because you love it. And there comes a point where you ens up doing it so well that prople want to pay you for that.
This is why i always recommend to do whatever you love to so, money will eventually come.