This only applies to kids with terminal illnesses who are "suffering beyond any medical help" (see link below). There are strict rules about this, too. The kids have to request euthanasia and must prove that they understand their choice. As you can imagine, this has some people up in arms. Personally, I support Belgium's decision. If a child is going to suffer the rest of his/her short life, he/she should be given the option to die. You can read more about this here.