Just like stories are critical in speeches, images are also important to conveying your message. If you have images that will enhance your message, then this is an ideal way to use slides. For example, the image you see in this post resonates with Americans over 10 years old. Words will never have the impact this image does. This is the type of image you can use to advance your message.
Please note – I’m not talking about falsely moving your audience. That’s simply manipulation. Images should enhance your message to help improve them, not you. Use images that will positively impact your audience and make your presentation better for them.