I agree with what Harry says in his latest post above. Except that in my case,
annotations are crucial; and Marvin's annotation capabilities are so much more advanced than the Kindle's crude annotation options, that there was just no holding me back on the Kindle platform any longer.
But do I feel nostalgia after the clarity of a Kindle e-ink screen outside on a sunny day?

Absolutely. It was just no longer
practical and efficient for me to remain on that platform.