"Metadata Navigation Settings" Link Missing in SharePoint 2013 Document Library?

Problem:
Metadata navigation settings in SharePoint document library is missing!

Metadata navigation makes it easier to find and dynamically filter content in large lists and libraries.  Once enabled, it uses a navigation tree in the quick launch.

Solution:
You must activate "Metadata Navigation and Filtering" Feature from Site features page! To enable Metadata Navigation and Filtering, Login as a Site Owner or Site Collection Administrator to your SharePoint site.

• Click on Site Settings Icon >> Under Site Actions, click on Manage site features.
• In the Features Page, click Activate button next to Metadata Navigation and Filtering.

Now, You can configure metadata navigation to your SharePoint list and libraries.