Beg your pardon, but you are wrong. Here it is:
Up until February 2004, 321 Studios' hugely popular line of DVD-copying products, including DVD X Copy, DVD X Copy Xpress, and DVD Copy Plus, gave consumers the power to make backup copies of DVDs--even those with copy protection. But when a San Francisco federal judge ruled that 321 Studios' products were illegal because they circumvented commercial DVDs' antipiracy technology--not because it's illegal to make copies, mind you--the party was over. Since then, 321 Studios has released new, ripper-free versions of its line of DVD copying apps, but these programs are considerably less potent and cannot copy commercial DVDs.
It is antipiracy that you are not allowed to mess with....ie, removing copyright protections...There is very well founded case law that when you purchase anything on Cd or DVD, you can make a perfect backup provided you always have the original.