What are peoples thoughts on a writer directing their own work?...from experience.

I believe it all depends on the writer, on the director, on the production itself... If you're a writer, maybe you should "cast" the director so you get someone you trust your piece with. Just like a director would cast an actor they trust would interpret a role in-keeping with the director's vision. Also, there are directors who cast themselves in acting roles, so why not have the writer direct it? Another point: Is the dynamic changed if one of a pair of co-writers directs the show? There may be conflicting visions... (You could write a book on that). My experience on the subject is that I've been a writer/director on one production and been in another production where the writer was cast but someone else directed it. Both were relatively successful. (I know this hasn't really answered the question but I just wanted to add my two cents in case this stream gets turned into another 'Apocolypse Perth')