I love reading golden-age science fiction. Part of it is the nostalgia factor; it was a big chunk of the science fiction I remember reading when I was growing up. Part of it is the amusement factor at reading what people at one time thought the future would be like and marveling at how dated it is (would anybody today write a novel set milennia in the future in which men were the only ones in charge and people read newspapers and smoked cigarettes?). But perhaps the biggest part of it is their style; they were written in a much more direct way than novels are today, with little prefatory world-building and character development. Simak's book is definitely representative of the type; he's already burned through enough plot to fill two or three even longer present-day novels, and I'm not even a third of the way through it.