This devil loves mankind because men are going to always make the choice that will send him into ascendancy. He's been winning the game for a long time.
Among the weeds choking out growth and good government are the hundreds of boards, commissions, and advisory committees that have sprouted over the years. They devour time, money, and energy far beyond any real contribution they make.
I don't think that Slaughterhouse-Five was successful movie material. In fact, Vonnegut's books mostly I don't feel are movie material.