I believe it's mostly use to avoid having huge blobs of text and force the readers to have a pause to reflect about the text instead of leaving the page. Never

I believe it's mostly use to avoid having huge blobs of text and force the readers to have a pause to reflect about the text instead of leaving the page. Nevertheless, I feel the same way. I wish people would use simple diagrams relevant to the discussion (like the 1/2 + 1/4 + ... = 1) instead of overused macro images.