cry havoc

I betcha it's a huge, huge part -- but then, that's a strong factor for most writers (especially those who've achieved the level of writing full-time, and thus work from home, outside conventions and book-signings). Knowing that is why I've decided on the "always work outside the home" regardless of publishing status.

Okay, that, and the health insurance via employer is far better than what I'd get on my own!