I use cloud storage mostly to back things up. My neighbor's house burned down a few years ago, and a family friend lost her house to fire last year. Unless someone has an off-site storage facility, an extra hard drive in your house is no guarantee of preserving things.
It is a shame to see these cloud storage services going under. Already Ubuntu One went down, now Copy, and I expect a few other smaller services to go. Dropbox may do well. Box seems to be getting lots of business storage, so I'm hopeful for them.
http://www.bloomberg.com/news/videos...ion-footsteps-
Google, Amazon, and Microsoft seems the most solid out of them all for cloud storage.