No one uses RAID in favor of software? Everyone using software should restore now, broken or not.
Sorry Jip, RAID is not any more complex that it was a decade ago and is on the fly. No backup has trumped it yet. Carbonite is $50 a year and only does docs.
It isn't any simpler than it was a decade ago, either. My backup trumps it completely because it was much cheaper and is completely portable.
Carbonite offers "no limits on your backup storage space. Carbonite will back up all the user-generated files on your internal hard drive whether you have 1GB, 10GB or more." It is not limited to docs.
My solution (a combination of Dropbox and automated file transfers to a USB stick with occasional project-drops to a DVD) is doc-focused because that is what I need. I don't need to backup my environment ... just the docs I produce for clients.
Moving a RAID array is complex, setting it up CAN be complex, and it doesn't offer easy access away from your PC (unless you have 'net access to your PC). I can get my files from Dropbox from anywhere (including my phone) and I can bring my USB stick with me in my pocket.
A backup solution should be tailored to the user .. like any part of the PC experience. Personally, I feel that RAID is best for corporate environments and very large filesets that are not likely to move physical locations.