If yours is like most organizations, you have a policy or requirement of periodic (usually annual) risk assessment. Financial organizations and medical concerns, for example, fall under this requirement. Also, many organizations that have no regulatory requirement to perform risk assessment, perform one as a matter of best practice. And since you are doing one anyway, you might as well get maximum use from it.
It is the season when many concerns are allocating resources for the coming year. The information security budget is usually limited, even if it is adequate to protect the system and the information it contains. It is therefore very important that information security dollars be allocated wisely, and to maximum effect. To make a wise decision, you need to have the best and most current information. The results of an enterprise-level risk assessment are an excellent source of such information.