Google will now punish all websites that are not mobile friendly which means responsive.
From 21st of April 2015, Google will punish all websites severely in Google search ranking and put all relevant responsive/mobile website higher than websites that are not.
As more people use mobile phone these days instead of a PC, Google has been forced to adapt to the consumers as smartphone sales have boomed to over the last few years, it is vital to have your website responsive.
If your website is not responsive by the 21st of April 2015, Google may totally eliminate you from mobile searches.
Test your website now on how your website preforms under the mobile friendly test