Alan DeNiro writes over on Book Spot Central an article titled "Why I Write Science Fiction: An Apology by Alan DeNiro"
DeNiro is the author of the forthcoming YA novel Total Oblivion, More or Less (Bantam)and a story collection, Skinny Dipping in the Lake of the Dead (Small Beer Press).
Hat tip The Swivet
I thought it interesting to compare to Marti Steussy's essay on the same subject: "Why I Write Science Fiction". I adored Steussy's two novels in the 1980s; she's sort of an Andre Norton with a harder edge and sharper mechanics. The essay includes some excerpts from Forest of the Night, which I especially liked.