I have both a Kindle and an iPad and don’t see the latter replacing the former. They solve different problems for me, at least so far. I use the iPad primarily for browsing the web. Around the house (eg breakfast table, in bed) it is much nicer for that than having a laptop open and the Kindle is a non-starter for browsing. When it comes to reading books though the Kindle will remain my weapon of choice. It is lighter and easier to hold (and carry along in addition to my laptop). It has great battery life. And the e-ink display is wonderful for reading longer stretches. On top of it all I can use the Kindle apps on all my devices for moments of reading when I don’t have my Kindle with me. So my Kindle has nothing to worry about from my iPad.