To be honest, I have actually never read any books on an electronic device (other than my own; I am a published author of three going on four books to date :) ). I far prefer paperback or hardcover books myself. In fact, studies have shown that the human brain picks up and retains information more solidly from reading it by flipping through paper pages rather than swiping on electronic devices' screens.
That said, I have no objections to anybody reading books on an electronic device. It is great to have multiple options for reading and learning all around. Personally, I think the written lettered formats and designs of literary texts and pictures (whether just on the book cover, or within the main body of the books themselves), are much more well-organized and comprehensible in paperback and hardcover books than they are on electronic devices. Words and images seem far more condensed when displayed and formatted electronically on Kindle than they do in printed books, in my opinion. What is interesting is to read any one given book both on Kindle and in paperback/hardcover format (separately or even together), and make direct comparisons between the two formats up front.
As long as people are reading, then electronic devices and paperback and hardcover books can share the literary spotlight equally at all times! :)