Would you trust anyone with the keys to your house, bank account details or even the passwords to your online life? I’m guessing no is the answer. so why would you allow yourself to be at the mercy of an ‘online’ company with you ‘online’ data?
I have never trusted my data to be anywhere except in my possession, a place where I can get to it 24/7 and knowing that NO ONE can see ANYTHING I don’t want them to see, Calendar appointment, Address Book details, files etc.