It's a bitter pill to swallow the first few times it happens, but eventually it's a lesson we all have to learn. Parting is sweet sorrow, but just as I found solace in the pages of Spidey Super Stories as a little kid, when I do excess out bits of my collection, I cross my fingers and hope that my books will be well-loved and well-read by some other little kid who may start his own collection off of them. That's the greatest gift of all. :)