Any back up system can fail. I'd personally never use a cloud service for that.
Why not? They guarantee things, if you choose a good one. They're geographically redundant, and physically and electrically redundant beyond that.
For backing stuff up, remember that those disks you "burn to" have a finite lifetime. Don't use or trust them for your primary back up. Hard drives eventually go bad and fail, and can also suffer from bit rot. Best to use something like a 3 disk rotation with one disk being rotated out and replaced every few years.
It is funny how you say the cloud is bad, but recommend DVDs or BluRay disks (with the appropriate caveat.)
Someone a few posts up said that they keep hard drive copies all over the place, and that the cloud wasn't secure enough... That person needs to learn more about security.
And don't keep your eggs all in one basket, have an off site back up in case your house or business location is destroyed in some unfortunate and unexpected disaster.
Agreed.
Look, the cloud isn't anything other than you paying a company to very cheaply store files for you.
The amount of resistance I am reading in here about the cloud tells me that I am most definitely correct in my position to use it, selectively. Multiple positions stated here have been backed up by feelings and not by facts.
Every single one of you knows an attorney or can find one in the phone book. Read the terms of service and other agreement(s) such as the service level agreement between the customer and the provider, and then have an attorney look at it, and determine for yourself if a particular "cloud" provider meets your needs.
There is no yes/no answer for "the cloud" because "the cloud" isn't a single entity. It's a thousand entities each with their own differing guarantees, SLAs, and AUPs.