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

I have had about 10 plays performed (either original works or adaptations) and have so far directed my own writing once. I'm directing my own script again this October. In the first case it was a matter of being extremely close to the material and having a very specific idea of what I wanted to see on stage. In the upcoming case it's a matter of the project being a directorial project that got a bit out of hand in terms of editing the script - I wanted to present a new version of Shakespeare's Julius Caesar, and the editing/dramaturgy got so out of hand it's now an entirely separate script that shares one line with its source material. Generally speaking, I *like* to see other people direct my writing. I've already given my perspective when I wrote the script. I'm subsequently keen to discover what facets and perspectives can be found by the director, designers and the cast. It's a significant part of why I work in theatre.