Same reason you would prefer a Kindle (or other hardware e-reader) for reading normal books over a tablet. The eyestrain thing apparently doesn't affect everyo

Same reason you would prefer a Kindle (or other hardware e-reader) for reading normal books over a tablet. The eyestrain thing apparently doesn't affect everyone, but for those it does it makes staring at a screen for hours a non-issue. Also, although it probably isn't such a useful function with a monitor (except in warm climates), this sort of screen will be fine to read outside compared to - say - a laptop screen.