Are images/graphics in blog posts that important?

When it comes to posts, what kind of images and/or graphics do you find most appealing?  What makes you want to share a post across your social networks?  Take a minute to think about it. For me, not only does the topic have to interest me but the images and/or graphics have to grab my attention!  There are many things that contribute to a great image/graphic including: subject, size, proportions, the inclusion of text (when appropriate), exposure, clarity, perspective, vibrance, and color palette.  I try to keep all of these things in mind when drafting my own posts.  Writing comes naturally to me and while photographs and graphic design may too, they still take me longer to prepare and finalize.  It's definitely worth it but let me tell you why.