I'm a big fan of Harold's Planet cartoons, which arrive daily in my inbox. This one spoke to the writer in me. I read it as, Who cares if I don't sell anything, I'm enjoying writing it anyway.
If you don't enjoy writing, there's no point doing it. There are far easier ways of earning money. It always amazes me when I hear of people moaning about how hard it is to motivate themselves to write anything, how every word is a struggle. So don't write! Watch TV instead.