What is the importance of a strong introduction in content writing?

It's simple if you have written a strong introduction. Readers will be impressed and read further. If it's not good and they won't like the start, they won't read ahead and close your website Instantly. Try to notice you also do the same if you don't like the start; you close the page or worse, don't open it. So, this is why we should write a strong introduction to any content. But if only the intro is strong and other content is not, readers will close your site because of that, too.