I admit to being a Kindle user! However, apart from the huge sociological issues that we all should be very worried about, I'm finding it puts me off new authors. The Kindle bestselling list is almost all very cheap titles from self published authors and out of copyright classics that have been turned into Kindle books. Some of the books I've read are pretty good and with a lot of polishing could have made fine books. But oh boy do they need a decent editor! They are littered with grammatical mistakes, plot holes and general dross that a professional editor would have helped put right. However, in the kindle world the authors of the self-published "bestsellers" don't have the money to employ an editor!
Kindle books may be outselling paper books, but the numbers would be VERY different if we eliminated SELF published and out of copyright works from the equation. We would see a very different picture then, especially as a Kindle book is generally more expensive compared to "bestselling" paper books.