Originally Posted by Ryan
I also have no idea why Wayne had to die or even Batman for that reason. If whats his head is going to be continuing as Batman anyways, then why would you have him Batman die? Wayne could have basically just retired (as he did anyways) and moved away with Selina regardless. The only reason to fake a death would have been to get loved ones off your back, but then, he revealed to those he loved (gordon,fox,selina,alfred) that he was alive anyways. So who did he really fake out? A bunch of gotmamites that wouldn't have cared one way or the other and that didn't know he was Batman anyways?
Legacies. Its one of the major theme of the trilogy.
Him being a martyr for the City , putting his life on the line for Gotham , reinforces immensely his achievements.
Symbols are everlasting.