Images also work as navigation tools. If a blog has many pages with different images, it will help visitors to remember on which page they are. It will also be useful for people which are looking for specific articles. Choosing relevant pictures for each article is a great option in this case.
If you are making large posts, it's easy for the readers to lose the line which they are reading. Posting images may divide the text into logical parts and reading it will be much easier, without spending a lot of time searching for the required line.
Images will help to make your posts individual, and make them different from other posts in the same niche. People will remember images attached to each post.
When visiting a website or a blog every reader scans it first. If they find an interesting and attracting picture, then they will check it again together with the post. It is especially helpful for visitors from social networks.
Images also bring traffic to blogs. You can choose a relevant image and each time people search for it, your blog will appear in search results and will be visited by many people.
All these are the benefits which you can have by simply posting relevant images. After reading this post you will know about the reasons to add images to blog posts.