As my Kindle is still O.K. I can see no reason whatsoever to change it. When it eventually does cease to work I will then consider all the options available at the time. Lack of audio doesn't bother me as I have a good mp3 player that also plays audio books, of more concern is that by making it thinner have they also cut battery capacity?
The Legend of Zelda Breath of the Wild review: Five hours with Zelda on the Nintendo Switch