So the following game should definitely not be used to show the benefits of castling. While castling was not the losing-est move in the game (taking the knight on g5 was), castling at least lost a pawn for Black. With the h file open, and a bishop eyeing h7 all White had to do was play the mating attack in the right order. He was even able to choose between 13.Qxf7 and 13.Ne4, as both of them led to mate.
(BTW I have to apologise to Bill East for featuring two of his recent losses in this blog, especially as they were both against members of the Press family)
Press,Harry - East,William [A48]
University Cup, 13.03.2012