I simply don't understand why people give so much value on their horn.
I mean really : why?
They are beautifull and strong creatures! Why we need their horns ?
Why we need their head on our carpet or wall?
I come from an old fishermen family and there is one saying:

• Don't take more that you can eat!
  Nature still (even with pollution) provides us with all that we need.
  We as a race are greedy...and we need to feel superior over all dominion of Creation.
  In my opinion I can say that I agree @shenanigator legalizing is not a solution..furthermore I think that actually they will hunt more if they make it legal...