Quite simply, responsive web design enables a site to automatically adjust and fit correctly on the device that it is being viewed on. Try resizing your browser window now and see how this page changes. Take a look at it on a tablet or smart phone too. What does Google think about the importance of a responsive website?
FACT: If your website is not mobile friendly and using responsive web design, it will have a negative effect on your positions and listings in Google searches. This means a drop in results. Can you really afford this?
Responsive websites by their very nature are mobile friendly. If your customers or clients view your website on their mobile or tablet they will be presented with a seamless experience.
Google will rank your website better if it is responsive. With the coming together of desktop and mobile searches in Google's algorithm, if your rankings are important to you, you need to go responsive.
Keeping people on your website is vital if you want to get your message across. To do this you need to provide them with the best Mobile experience.