I've got a 'Road Worn' series P-Bass and although I wasn't too fussed about the 'ageing' thing, it was a lot nicer to play than the brand-new sparkling 'Classic' version. It had a much more 'played-in' feel and it looks pretty cool as well. The other advantage is if it picks up the odd knock or two, it's not really an issue. In terms of actual Custom Shop Relics, it could be the difference between actually taking it out and using it and keeping it safely tucked up in it's case through fear of that first ding on a pricey instrument. Other than that, many people love the look of vintage guitars.