from the Helproom.
You don't have an automatic right to make a copy of any software you buy - the copyright law is clear about that - but it's true that many companies turn the proverbial blind eye when consumers do it.
The anti-copy protection is there for obvious reasons - to combat software piracy.
To be honest, when you buy a game that costs £40 it makes sense to look after it, and no software company can be expected to run a disk replacement service because some people damage their purchases. When you buy the software you are buying a licence to use it, and if you want another disk you'll need to buy another licence - any other system would result in all kinds of abuse.