Ask any person who is creative (art, dance, music, writing, etc) and they will tell you that it is not for the potential of fame and fortune (as gratifying as it is, if it comes to pass), but it is for pure self expression.
I’m sure that any writer will tell you that for every story or piece that they have completed, there are four or five (or even more) half started drafts sitting on their hard drive or in a draw if they write via more traditional means.
One my favorite books on writing is called Bird By Bird by Anne Lamott. She has a chapter called Shitty First Drafts. I highly recommend this book for every writer, regardless of the genre that they are writing in.
Ask any writer and they will tell you that it is not easy. Writing, unless your working with a partner required solitude and concentration, which is not easy in this always on the go 24/7 world that we live in.
Will we all become the next Stephen King or Danielle Steel? Probably not.
But I know that I always feel better after I have written, even if turns about to be just another shitty first draft.