Authors:

I don't know a lot of writers, even writers who have been on the bestseller list for a few weeks, or writers who have gotten movie options, who can live on just their writing income. Once you break it down to the years it took to write the book, place it, promote it, and you pay the agent, pay the taxes, the annual income is not enough to live on comfortably. I do not have a starving artist inclination. I'm from the working class. I don't feel creative unless I feel like my house is going to be there and I'm going to be fed. I can't worry about money and write. Maybe some people can.

Source: therumpus.net
I don't know a lot of writers, even writers who have been on the bestseller list for a few weeks, or writers who have gotten movie options, who can live on just their writing income. Once you break it down to the years