There have been many accidents (normally wipe outs) during go-arounds. These are invariably because the crew was unprepared for the event. Yes, I know it is covered in the approach/landing brief (or should be) but how much attention is paid to this item. I find that, if I get my students into the mental attitude that all approaches are for a GA and that landing is a bonus, they fare much better and even the most complicated GA procedures (Coventry westerly) are handled well.