Right or Left?

I'm right-handed. My handwriting is terrible, but I can't blame that on being made to write with the wrong hand. I have always been right-handed. All my family, to the best of my knowledge, has been right-handed. It has just occurred to me that almost all my book characters (the ones who write) are right-handed like me. The only two exceptions I can think of are Alice McDonald Campbell from Heather & Heath and Dumas Hardy from Counterpoint Questions and Counterpoint Answers.
This leads me to wonder is left-handed writers write more left-handed characters than I do...