Earlier quoted context omitted.
I'm a little surprised at the strong support this comment has driven. Haha, I usually use this account for opinions that I would think controversial.
I see this opinion voted to the top of Hacker News all the time. People seem to forget that watching something in video format is just so damn convenient, and requires little effort.
Similarly, when I'm reading text and a message (e.g. email, IM) comes in, I can switch over to the other program, reply to the message, switch back to my browser, and the text is right where I left it. With video, there's no such guarantee. Also, I've never come back to a text document and needed to sit and wait while it buffered again.
I can easily alternate between four or five different text documents, taking each a paragraph of two at a time, and still follow what it happening in each one. This may be a personal deficiency, but I've never been able to do that with videos.