Text is boring. This is particularly true in the context of people on their phones surfing on the net.

Text is so boring that people scroll past the text as quickly as they can until they see some visually appealing picture or video that causes them to pause. Only then will the accompanying picture text or caption be read.

Blogposts on wordpress or website articles default to text only when the links are shared, unless extra steps are taken to ensure that a featured image automatically appears when the link is shared.

This video shows how this can be done on a wordpress blog using AIOSEO plug-in inside wordpress.