I do a lot of shoots on farms. This means I end up spending a lot of time wading through cow dung, hanging onto the back of quad bikes, climbing around milking sheds etc... While this lens is a jack of all trades and so doesn't offer the quality of primes or more expensive but shorted pro zooms, it does offer unsurpassed versatility. I can take portrait shots, then pull back and get the whole stock yard then zoom in tight on a subject, all without having to swap the lens and risk getting all sorts of nasty stuff in the camera body.
For anyone who has a similar requirement to me (i.e. not swapping lenses on shoot) this is the perfect DX lens. All I'm waiting for now is for Nikkor to get their buts in gear and do an FX version!