We've now reached the point where over half of online adults today surf the web on anything other than a traditional computer. Of online adults today, over 80% use a smartphone and 50% have a tablet. With this in mind, it's important that websites offer legibility and maximum usability for smartphone and tablet users.
It's plain and simple: responsive design is a step in the positive direction for your customer service strategy. If a potential customer cannot navigate your website from their phone, you may have lost them forever.
In addition, it's also good for SEO-- aka, Google recommends you do it too.
Still not convinced? Check out these stats below that reveal why it's time for sites to maintain responsive design.
Infographic courtesy of RebuildNation