I didn't want to start a thread just for this bike, but I don't really think it's "stupidly overpriced" more like...why did you originally spend that much money? Guy allegedly spent $3000 having a helmet painted (included with the bike, which had $10,000 put into it)
http://www.kijiji.ca/v-sport-bikes/london/ducati-848-race-replica/1167733675
If you have to question why someone spend that much money, you should start with a question why does it matter?
Your neighbour across the street probably have the same question on why you spend money on that death trap two wheels.
People spend money for their pleasure. Questioning why is stupid in itself. $3000 is nothing compared to kids buying $10000 Apple watch.