re: Why is the Grandfather-grandson relationship so special?

My oldest grandson is 14 years old and lives not even ten minutes from us. I retired back in January and got a hand written letter in the mail from him a few days afterward telling me how happy he was that he would be able to see me more often and how much he loved and appreciated me. For a kid to take time out of his day to do such a thing was incredibly touching. I would do anything for that boy.