I bought my 09 RSV "used" (was only 3 months old and had 2500km on it so it was practically new). The last two cars I bought were used as well.
Sorry... but I don't think telling someone that is buying a new bike that they should buy used is good. There is nothing like a new car, a new bike, or a new house. Knowing that YOU are the first owner, that no one else has messed with it.... the smell of a new house/car.... sorry, but if you haven't had the pleasure then you are missing out.
Sure... a car depreciates the minute you drive it off the lot. But who cares? No one plans on selling their car the moment they drive off the lot. And really... knowing that it is new and you are the only one .... priceless.