How many of you have heard of rich poets? I am not talking about in spirit or love, either. I don't know of a lot. There seem to be more fiction writers making it big than writers of poetry which is one reason my mother wants me to focus more on writing stories than poems.
People who dismiss those considering the financial aspect as not being true artists are not being fair. They will condemn those who are worried about paying bills and turn around and complain about not having a job they love. Writing is a full-time job and most of us don't get paid. Writing is a full-time job we love.
So, why stick to something that may never pay off? Serious writers already know the answer. You write because you can't NOT write which includes those of us compelled toward certain types. It may never be anything that gets you famous. But it is what you long to do. All you can do is to do the best you can, even without a weekly paycheck.