The media frenzy and throngs that would follow Bush (or any president) to a funeral would create mayhem. In my own opinion, this would be a greater disrespect than not attending. Like Rodchester says, a funeral is a private, personal, family affair - not a media event or photo op. The "funeral" of Paul Wellstone, which turned into a huge campaign stop sickened me.
Let the families grieve and say goodbye in privacy -the President was neither family nor friend, he has no place there.
Greg_W