If you entrust personal data to a corporation that has a financial interest in using it for marketing purposes, G-d bless you. I’ll continue to save locally and do a proper backup regularly/automatically. It’s also great that I can use OpenOffice (free), GIMP (free), and Thunderbird (free) and not pay anyone a monthly fee for storage.
The trend that says AWK! AWK! CLOUD GOOD! LET’S PUT EVERYTHING WE WRITE ON THE INTARWEBS! YES! MODERN! TECH! is frankly retarded.
Nothing wrong with saving locally and using a properly encrypted backup service and software like Carbonite. One that you, and only you hold the crypto keys to.
Tresorit also looks very promising, especially since it’s based in Switzerland, not the land of the brave and home of the NSA.