There is only one reason someone wants to make 'offsite backups'. Or onsite backups for that matter. Everyone knows this, inluding the NZ government. What you spray out in your first sentence is internet moron propelled myth, rumour and rubbish. There is only a single reason someone asks what software can copy a movie DVD.
Rubbish. I have DVDs of tv shows and movies, which are all ripped to my computer. Its just a lot easier to find a file in a computer, then constantly insert discs. Not to mention if you have collector edition dvds, you would try keep them in nice condition. I do the same thing with music as well. Not to mention most tvs are easy to set up to stream, so its easier to access stuff if its just all backed up to one location.
The only people who still believe backups are for piracy only, are the movie industry who still seems to be stuck in the past, and don't realise digital media is what people want.
+1
You can recover (in most cases) a file lost on a harddrive bar some extreme physical damage. In the event of a corrupt harddrive/OS install/format, you can recover data.
In the event of a broken disc, you're boned.
I and many others I know backup our files onto drives, some of us spanning various terabytes of storage.
While I can understand (and have forcibly studied) piracy and the implications of it, you shouldn't have a preconceived idea that everyone who wants to do something is doing it for illegal purposes.
Ever lost an install disc? Had someone or yourself break a CD/DVD? Too many scratches in it? I have, in just about all cases. Digital media, backups and storage is a god send.