I wouldn't like reading a book on the PC, either, but the Kindle has a special something in the screen, that makes it glare free and just like reading a book. And I can make the font bigger for me weak old eyes.
I found it hard to hold a heavy book and turn pages and the print was too small. I didn't think I'd like it, the Kindle, if it were like reading on a computer, but it isn't and I love it.
I sit it on my lap, sit back, push a leetle button to turn pages and enjoy. I only have to charge it about once per month.