Sophie Jordan/Sharie Kohler | Juggling Genres

Authors can find themselves writing in different genres for multiple reasons:
1) varied interests that demand you try your hand at ... well, varied genres;
2) career security; and, 3) a cheating heart. Yes, Hank William's twang is
running through my head right about now. Anyone else?

As you may know, I write historical romances (Sophie Jordan) and paranormal
romances (Sharie Kohler), which puts me at writing a book every five months,
sometimes less. Why do I hold myself to such a demanding schedule? Which of the
above reasons motivates me?