Take a book on a 3 week backpacking trip into, say, the Bitterroots or the Selways. You've got something to read long after the batteries in electronics would have gone dead (unless you carry another gadget to use solar energy to charge up, assuming it doesn't rain). You can read the book and in extremis use it as tinder to start a fire or to wipe with. You can use pages to write notes for help or to keep a diary.

And the weight will be about the same.

As I said, there are good features to both books and electronic reading devices and there is no reason not to use both if you so wish.

You're reading.