Mobile Friendly sites are favored by Google and also its convenient for your visitors to easily navigate, read and see all the contents on your blog, as there has been drastic increase in the use of smartphones to surf the internet, now it has become mandatory for the webmasters to switch to Mobile friendly site.
From the Google Webmasters Blog April 21st’s mobile-friendly update boosts mobile search rankings for pages that are legible and usable on mobile devices.
Affects only search rankings on mobile devices
Affects search results in all languages globally
Applies to individual pages, not entire websites
Here is how to test if your site is Mobile friendly just enter the Url of your website and test.