Accepting Bitcoin good for collecting
I think it would make great sense for auction houses and dealers to accept bitcoin for payment. There is a ton of money people have made and why not make it easier for them to purchase coins with it. Further, some of the qualities that would draw a person to buy bitcoin also would attract them to rare coins (finite number, distrust of monetary policy, privacy, etc).
Obviously no one is forced to accept bitcoin but certainly it seems to be an obvious way to get some of that money into our hobby.