That's surprising to me. The only place I see un-justified text is online. Books, magazines, newspapers, even the research papers I read all have justified text with hyphenation.
My line of thought: You notice hyphenated words when reading. I had to ask myself, "Do I?" I don't recall noticing, but it's hard to determine that you don't notice something. So I then had to think about my reading material. Online, most text is not hyphenated - that is the genesis of the discussion, so I knew that immediately. Then I realized that the majority of my reading material is hyphenated - books, newspapers, magazines and research papers. (I even had to check some research papers to verify it.) So I concluded that I don't notice hyphenation, since I a) can't recall noticing it when reading, and b) I encounter it a lot because most of my reading material has it.
I was surprised that you did notice it, since most books are hyphenated. And now I get to ask: how is what I said a non sequitur, and how have I misrepresented what you said?