As half an English teacher, I have issues with this. When talking about day-to-day life and sending pictures to answer texts, that's fine, but we cannot communicate solely on the use of images alone. Using only images could lead to many miscommunications and misunderstandings. "A picture is worth a thousand words", which means that a picture can say a thousand different things. Even social network sites that focus entirely on images, like SnapChat and Instagram allow users to attach captions to their images. We don't communicate in a world solely based on images. Often times, we have something to say about the image or feel we need to offer clarification. Though snapping and posting an image might be easier, words will never be obsolete.
New Age Communication

