I'd always thought collaborating with another author would be a drag. How many author collaborative books have you read that kicked ass? Not many? Same here! I thought of how I'd loved Elizabeth Massie's short stories, but not Dreams of the Dark (Dark Shadows) with Stephen M. Rainey. I thought of Black House by King and Straub, which I didn't care for. In fact, I couldn't think of one single collaboration book I liked except for Skipp and Spector's The Cleanuup. This would be a failed venture, right?
I've been collaborting on a story with Ro Van Saint, and it's the best story I've ever taken part in. Plus, it overcomes what I think is the worst part of being an author--the loneliness. I'd never written anything so sick in my life! And if there aren't many great collabs, then why not rise to the challenge?
So if you get the chance, definitely collaborate. You won't regret it.