Because they would have wanted it that way
Just when you thought we had reached the absolute limits of tasteless, and just in time for the fifth anniversary of September 11th, the National Collectors Mint has produced the 9/11 commemorative gold piece.
The Twin Towers majestically stand again, in .999 pure silver that was recovered from a bank vault found under the debris at Ground Zero. The skyline featuring the World Trade Center is struck separately and fitted into the coin's background. This World Trade Center skyline can be removed and inserted into a slot on the face of the commemorative.
I think I am going to be sick.