I believe that Bruce Wayne had a twin brother. They both shared the burden of being Batman. Both of them sacrificed their individuality for the sake of inspiring a city. One loved Rachel , the other Selina (i dont know which one liked Talia , but just by looking at her probably...both). One died saving the city , and the other lived a normal life (maybe with the one he didnt love). It eased Alfred's pain , because he had no idea they were two. He actually thinks Bruce lived....
