There are many cost effective and safe ways to utilize cloud services. The decision to use cloud services (or not) are much easier to understand once all relevant areas of opportunity are identified. For example, you might be using a free or unreliable provider for email services and want to transition to a more robust provider. Or you might be actively backing up your critical data and programs locally, but don't have a copy off-site or in the cloud.
All these issues can be identified and clearly explained so you can make a rational, cost effective decision on what's right for your business.