The internet is full of moonlighting writers who work in a day job to pay the bills but call them writers nonetheless.
I am not a writer despite I have a bunch of blogs and websites. I can relate to their ambitions somewhat as I had mulled upon working as a science writer or journalist at times. I even sent a job application to Austrian Broadcasting a long time ago.
Finally these ambitions did not get me anywhere. I feel I had to decide often between being a fence-sitting commentator or somebody who is in charge of and fully accountable for technical problem solving - and I always picked the latter.
Disclaimer: This is not to say that being an analyzing commenter or writer is something lesser. Sure, you can work as a problem solver and be paid for writing about some aspects of that, too. But I consider them nearly mutually exclusive options as long as my own career is concerned - in a postive way actually!
I just like writing on what comes to my mind in my spare time too much. I like it too much in a sense, and I don't want to entangle it with commercial transactions. Thus I don't do or plan to do: Blog posts that are sponsored in any way, visual ads, or affiliate marketing. The latter would be rather straight-forward as I write about books a lot. However, I use a free WordPress.com blog that displays ads as I don't pay for the no-ads feature.
I think I write in order to organize and develop my thoughts through writing. Even the fact I have so many different sites is related to my considering websites experimental playgrounds. Nobody can escape the power of online feedback by likers and commenter, in particular when positive. But this is exactly the reason why I regularly return to ancient, non-interactive, and badly Google-ranked websites of mine like this. I writer under the assumption somebody could and will read it - someday, and I might be held accountable. But I don't write for likes, just as I don't write for money.
Some blog postings of mine about blogging and writing: