Images are integral to your content. When my wife broke the screen on her iPhone, I took it in to have the screen repairs. At the front of the store, there was a display case, with old broken screens lined up. I took a picture of it and posted it on Facebook and labeled it “The Boulevard of Broken Screens!”. Have you ever seen the image called, “The Boulevard of Broken Dreams”? What emotion does that conjure up in you?
Creating graphics is a skill. So is photography, design, layout and using software to enhance and optimize them. You can choose to do it yourself or hire an expert, but either way, you brand is depending on the quality, the emotion, and the use of those graphics.