I think you're extrapolating your opinion to "most" people. Gmail is extremely popular, and while Docs is no Gmail, it has no serious competition for cloud-base

I think you're extrapolating your opinion to "most" people. Gmail is extremely popular, and while Docs is no Gmail, it has no serious competition for cloud-based editing. Even if you're not using Gmail's webapp, it's an entire email infrastructure serving as the backend for Mail.app or Mailbox or whatever you use. At this point, if someone doesn't have their own mail server, they're probably using Gmail.