Why is the horn considered to be dangerous for rhinos?

Muslims value their horn for ceremonial knives and daggers and the Asians think it is medicine. A single horn is worth up to $250K USD. Sad thing is, Muslim royalty has thousands of these knife handles, the average Muslim doctor can't afford them. How many more do they need? The Asians would be richer if they ground up toe and finger nails, because the horn is the exact same materials as these right down to the sub-atomic level.
because people are taking their horns for them self and bieng selfish
Poachers/hunters hunt Rhino for their horns which is made of their strong hair.