That means we have to trust Google.
After reading the book 'Permanent Record' from Edward Snowden I no longer trust Google.
They keep shadow profiles from users. They do allot of things against privacy, in favor of their business model or serving interests of their government.
I deleted my Evernote Account when realizing thousands of my personal records and notes where stored on a Google server.
Speaking with others, I don't know many people who actually do trust Google. The reason they did not leave, is because they see no way out.