I wouldn't presume to answer for CraigC, but allow me to clarify some points (bolded numbers in the quote) for future readers:What does it not do for you? (1) Is the sight picture not significantly more refined than a notch and post type? Can you not focus on just one distance instead of trying to (2) keep the front sight and target both in focus? (3) Is there not less slop than a notch and post sighting system with the notch a little too wide for the post? Does the gun not shoot to the dot (which is, of course, correctable)?
1. The sight picture of a red dot wouldn't usually be called refined as the dot is constantly moving on the target...it is like trying to hold a laser pointer still during a presentation.
2. You shouldn't be trying to keep the front sight and target both in focus
3. "a little too wide" would be based solely on intended use. When shooting quickly, the front post is properly centered in the notch by your subconscious as opposed to your conscious mind. I've found that there is more slop (movement of POA) with a red dot than iron sights