I only buy technical/developer e-books, and read them on my computer, or open them for a quick sanity check on a concept at work. I can take them everywhere rat

I only buy technical/developer e-books, and read them on my computer, or open them for a quick sanity check on a concept at work. I can take them everywhere rather than carrying 40 lbs of reference material. However when it comes to pleasure reading, I usually like to buy a physical copy.