I checked out two different ebooks today, just to see the difference between justified and not-justified on my 6" Kindle. Man...those ragged edges just hurt me so much in a very deep and very personal way. I don't like the way it looks at all. Give me an aligned letters on the right side, I don't care how much space there has to be between each word!
That's what I'd like to say, anyway, but the ebook without justification had something even worse: added white space between each paragraph. Good Lord Almighty, just looking at that for a minute made me want to puke my guts out. And unfortunately, that was a book I wanted to read!