Why did the laws of Hammurabi not lose their force even after 1000 years?

The Babylonian king Hammurabi himself said: “My laws are canceled and have no equal.”
Yes, they were cruel, but their justice was not questioned. It is thanks to this that the code of laws of Hammurabi has not lost its force to this day. Moreover, they are taken as the basis of Roman law.
The current principle of the laws of Hammurabi, the talion principle, proclaims the punishment “equal for equal”, in other words, “an eye for an eye”.