Why are Scout and Jem disappointed and ashamed when they compare Atticus to other fathers? What does Atticus do that makes them feel proud?

     In Jem and Scout's eyes Atticus, who was almost fifty, was old and "feeble." He tells Jem that he is too old to play football with him. Atticus wears glasses and is in fact, almost blind in his left eye.  Atticus works in an office and does not, in Scout's view, "do anything." He does not participate in the same activities as the other fathers. He does not hunt, play poker, fish, drink or smoke. His favorite pasttime is reading. As well, Atticus does not reveal to Scout and Jem the talents he has or the reputations he has earned over the course of his life. They do not know, for instance, that Atticus is known as the best checker player on the landing, that he is well-versed on the harmonica, or most importantly, he is an expert rifleman. Jem and Scout begin to see Atticus in a new light when he is asked by the sheriff to shoot a rabid dog and his talent for shooting is revealed to them. Jem and Scout are amazed that their father, "One Shot Finch," is so talented.