Comment by Mediterraneo10

I have quite often seen people here and on other tech forums assume that purchasing a Kindle means being locked into Amazon's ecosystem, giving up personal details, and having the risk that your books might be deleted. But you don't have to use the Kindle's internet connectivity: I have owned three generations of Kindle, and with each one I activated airplane mode the second I unboxed the device and I never turned airplane mode off. All my ebooks come from sources other than Amazon (mainly LibGen, for example), and they can be easily transferred over to the Kindle by USB because the Kindle appears as any ordinary USB drive to a computer.