Therefore, it is necessary to write, express your opinion, accompany your pictures with comments or stories.

This is a question of viewpoint. If someone writes out of necessity (even for a single photo), then that is bad. I often see photos without any description, and the writing is often not needed. The photo speaks for itself.

This depends on the genre of the blog or the blog post too.

I post photos and I write about my life in my blog mostly for myself. Both the bad and the good experiences too. To describe it in a short description, I document my life in my Hive blockchain blog. Usually it is natural to write in this case, but sometimes a picture says more than a thousand words.

Have a nice day and have a nice weekend.
All the best. Greetings and much love from Tenerife Canary Islands Spain.