Slaughter of the elephants

In the article "Slaughter of the elephants" is telling us how they are killing off elephants for their tusks. The article is explaining that 62 percent of elephants vanished from 2002-2011 because they are being poached for their ivory. They are creating new trees which are contributing to the clean air that we like to breathe. I feel there is a different way that they could get the ivory like maybe putting them to sleep because these animals are very important to the rain forest. If they cant get the tusks without killing them then maybe they should not get it at all. Also these are amazing creatures so why would you want to kill them off.