I don't think people are missing any point, I just think some people don't like the kind of style Nolan went for with Batman. To me, it's a very subpar version of the character. I mean, this isn't a nonfictional movie here. Who cares what would happen in real life? And I'm not saying you can't show the pain of being Batman, but at least try to give us an accurate version of the character.
He retires for eight years, then puts the cape back on for one last "hurrah", and then retires again?

I think they missed a very vital element to the character of Batman. I loved how they treated him in BB, but then TDK was kinda screwy for me, cause I didn't like how Bruce kept trying to retire with Rachel, although, by the end of TDK, I thought he was going to continue to be Batman. Then TDKR comes out, and it made his character that much worse. This whole "it's a more realistic version of Batman/Batman wouldn't be able to last in the real world" is just a cop out excuse, because a Batman wouldn't be able to survive more than a week in the real world. It all relies on how the character is written, and to me, it's not a proper adaptation of the character. It's so weird how sooo much emphasis is placed on Batman's "no guns" rule, but then the part about Bruce making a promise to his parents and having to fight the same criminals that put his parents in the grave, is fallen by the wayside.
I blame everything on Rachel Dawes.