I've found that e-readers are perfect for novels or nonfiction books meant to be read linearly from beginning to end. I don't buy paperbacks anymore because the

I've found that e-readers are perfect for novels or nonfiction books meant to be read linearly from beginning to end. I don't buy paperbacks anymore because the experience is superior (lighter weight, backlight, word definitions). But I do still buy physical copies of technical textbooks or reference-style works. Ebook formatting is still just not good enough in my experience for things like code blocks and math formulas. Also, for those types of books, the ability to quickly scan through the pages to find something is important, and e-readers still do a very poor job at this.