I avoid debuggers too, not because I am afraid of them but because I find logging etc works better. However, the fact is that I wouldn't recommend being afraid of them. It is extremely helpful to know how to use a debugger.

In fact I would say if you don't know how to use a debugger, you really have no reason to avoid one. The point of knowing the debugger in part, esp. with more dynamic languages, is to do better debugging in your head.