I read Catcher in the Rye first, like you do, and went on to read everything Salinger wrote, unless of course the mystical pile of unpublished manuscripts exists. More than voice, I remember the feeling of Catcher in the Rye, the unstoppable emptying out of magic that is the end of childhood. The vague, dull amnesiac horror of approaching adulthood. If nothing else, I knew forever that someone understood.
I'll never read Catcher in the Rye again. Because I don't want that feeling to change. I'm still out there on that cliff, too, and I'm not coming inside. Not even when it gets dark.