The ways how people are accessing the Internet are changing and so do the ways how they shop or otherwise do business on the web. It won’t be long and our “trusted friend”, the PC or laptop, will disappear and everyone will do business on the phone or a tablet, or a watch. For business and personal websites alike, it is important that someone visiting your site from a mobile device is able to read your offerings.
This infographic explains and underlines the importance of responsive design and why it is a sound choice versus having a mobile site (adaptive design). Have a look.
Infographic Source: SEOcial