I love Clojure and dynamic typing and actively use it in one of my commercial projects.

However, my observation as an instructor is that static typing fixes a lot of issues in day-to-day coding of average (boring) projects, especially in projects where the average caliber of the programmers is low. It is not that it prevents bugs per se, but makes the creation process much smoother for people via instant feedback that the code won't work/compile at all.