My opinion is if you are a beginner, meaning you don't yet have the skills to draw accurately, then tracing is a good way to learn, BUT should not be used excessively as to keep you from improving your freehand drawing. Once you are able to draw accurately without tracing then I don't have a problem with using tracing to save time creating an outline.I have a question for the whole artist community: whay are your views on tracing?