If your website is not mobile friendly then you might as well not have one! Why? Because search engines like Google will not display your website in the mobile phone search results if people have to pinch and zoom to use it.
Today your potential customers have many devices including laptops, tablets and smartphones. When they need what it is that you offer they could be on any one of them. If your website is Responsive then it work on all of them.
You may only be open from 9-5 but we live in a 24/7 world where consumers expect service around the clock. If you’re not educating customers about your products or services and don’t have a call to action then you’re leaving money on the table.