Library vs. Owned

I believe I struggle with the same dilemma that many avid readers do in that I am torn between the books I already own that I want to read and the lure of the books that the library has that I also want to read. Now that I have discovered the beauty of the inter-library loan and the vast amount of books that have now been made available at the tip of my fingers, the problem has become even more pronounced. :-)

How do you solve the dilemma between reading your own books and getting books out of the library? Or do you just ignore it and read what you want when you want? Do you feel guilty for getting books out of the library instead of reading your own?