We decided in the beginning of 2014 that whether people asked or not we would make a point of making all the sites we made into responsive ones. More and more people are looking at websites on their mobile devices, and having a site that displays clearly, with legible text and images, formatted well within that, is definitely the way forward.
Currently we are working on revised websites for 4 existing clients where we did their website before, and we are creating newly designed ones to update the design and make it responsive at the same time.