Why Bother? Just a few numbers . . .
More than a simple design trend, responsive design is a set of tools aiming to arrange the way information is displayed depending on the device capabilities.
Although mobile maybe a small part of your audience, there is a trends that mobile web traffic is increasing. Based on 485 million emails sent in 2011 from Emailforge4, 47% were opened using an iPhone, 29% using an iPad and almost 22% using and Android device. Mobile traffic is increasing incredibly fast and people are using high end and fast mobile devices first to check their emails.
Content is essential but Skip the NON Essential Content remember the three click rule. Make sure your site is Thumb Friendly and Call Friendly.