In my life right now I am loathe to buy any more paper books. I already have too many collecting dust.
If a book is not available as an ebook, then it is almost always going to be a lost sale for me, period. I would rather try to find it from my local library or borrow it from a friend than buy it. As a matter of fact, even before I got a Sony reader, I had stopped buying books as a general rule. I think in the past 2-3 years I had bought maybe 4 books. *Maybe* 5. And I handed those on to friends when I was done. Every other book I had read in those 2-3 years was acquired from the library.
I know many people value books as treasures to keep for a lifetime. I certainly have some of those, mostly gifts from my parents throughout various stages of my life, that I have good memories of, but otherwise, paper books add to my clutter and dust levels and I do not want any more of them.
YMMV of course.