Think about your day, you got out of bed, showered, had breakfast, probably drove to work. When you think of those things, is it in words or pictures?
Think of your living room or someone in your family. Using just words, can you accurately describe what they look like? Can you know that what you've written is what a reader pictures in their mind?
Photos can communicate all of these things in a few seconds, and they profoundly influence buyers perceptions of what you offer. However they shouldn't be stock photos. They just make you look like everybody else.