You would certainly have to be an idiot to upload your data to a cloud storage site and then delete your local copies. No one in the world who cares about protecting their data should have merely one copy of it out there under any circumstances, whether it's on your local computer or an external site. Besides being shut down for illegal activity, the cloud storage site could go out of business, be hacked or suffer technical failure.
Cloud computing is all the rage and has been pushed hard for at least 2 years now. All kinds of advantages were touted, now people are seeing the downside.
Even here on FR, people are always talking about streaming video for movies. No thanks, I’ll keep my DVD’s cause I know I will have access again to them.