I am 100 percent agree with each and every point you have described in your post. Long talk can be boring, people are here for fun and if they don't find fun or something thrilling in your blog, They will leave you. If you are a video creator that you should tell something at the start of the video that catches the attention of the viewer. Maybe something that you are going to tell in the end. It will create Viewer interest in your content and he will watch it completely.