What is the main advantage of using Meta Description tag in SEO?

Meta Tags gives the brief idea to users about the page before the click. It is also one of the main on-site optimization techniques.

Meta description plays a very important role to increase CTR (Click Through Rate). If your web page has an attractive meta description, then you have more chances to engage the visitors on Google SERP. Google doesn't give any value to meta description, but if you don't want to leave any change to engage the visitor, then you need write simple, attractive and informative meta description for your every web page.