Depends on your circle really. For personal stuff, I make full use of google. However for anything business related my leash of trust would be a lot shorter. I'd feel much more comfortable to pay for a service that gives me someone to blame/sue should the response to a disaster be less than adequate. You really just don't get this with google.
Will you switch if Google offers you more space and better integration with their apps? Imagine being able to access & edit your Gdrive files from Google Docs and Gmail, for example. I think this is where Google's going with this.
