At the moment, I think my tree book TBR is okay, since I had to pare that mountain to almost 1/2 a few years ago. As Willoyd said, I have to admit that I have more tree books to read in the remaining years of my life (50 this year, and my families never have long lives) that I will never manage to read all of the one's i already have.As long as the tree book mount does't get any bigger (managed to restrain myself last year.) I'm pragmatic, that I will always be tempted to buy more books. My ebook's virtual mound gets bigger, but it doesn't really exist in a physical state, so that doesn't bother me at all.