I think the Kindle is good for me for a couple reasons. I'm lazy, first of all, so clicking a button and having a new book immediately is kind of nice. I'm also extremely cheap, so the Kindle versions being cheap or free is nice. The only downside is sometimes the formatting or text is off, in a way that I assume isn't in a print book.
The degree symbol in some books isn't displayed right, there's typos that are clearly from machine reading a physical book and nobody checking it.