Well, if you have an incurable disease, when treatment won't help you at all, you can use euthanasia, and it won't lead you into doing suicide
What Are The Good Things Of Euthanasia?
Euthanasia reduces pain to the ill person, Reduces cost, Grants the persons a respected death, freedom of choice is granted on the other hand human dignity is abused, Regrets can accompany those involved in the case of involuntary decisions and to some religion, they abuse the principles of religion.