Sooner or later your company could become the victim of a natural disaster, or something much more common like a lightning storm or downed power lines.
Just because your company may be a small business doesn't mean it's immune to data disasters. If a small business does not have a good and tested disaster recovery plan in place when disaster hits they may never fully recuperate and it may even cause them to go out of business. Sometimes even a data recovery service is unable to be of any help.