Why no company that values their data should ever "Go Google" 
Why don't people make backups anymore? I know that using Google Apps is much easier than running your own stuff in-house. It requires much less time and resources, but at the same time there are still best practices and disaster recovery plans that should always have something about backups in them. And just having them isn't good enough. They also need to be followed.  Having worked at a place without these ( and attempting to get them implemented ) versus where I currently work that has them and follows them, I have to say, there are a lot fewer times where I feel like screaming here. Do it, and stop expecting 100% uptime and availability of all docs/important information from any service, internal or external. Nothing is 100% but there are many ways to make it less stressful.