Title tags are three fold

1. A user searching for your keyword will see your site's link highlighted in the search engines if your page's title is the same as the phrase they searched for. This drastically increases click through and can even give you more traffic than those who rank above you if their title tags are not optimized.
2. Increase your rankings on the search engines.
3. Help the engines distinguish between pages that might look similar.

Hello

This information is such that people keep on working on these and still they remain unaware of these facts.
Thank you for sharing.

Thanks
A2zchild