Is your online presense looking funky on smart devices or tablets? Is this potentially a larger issue? Yes, there is a very good reason to update this and ensure a proper online experience... users are asking for it. Almost 70% of them actually.
"Two thirds of consumers report they’re more likely to buy from a mobile-friendly site, and a little less than two thirds (61%) say they'll abandon a mobile site if they don't see what they want right away."