1. EUTHANASIA
The intentional killing by act or omission of a dependent human being for his or her alleged benefit. (If death is not intended, it is not an act of euthanasia)
An intervention of medicine whereby the suffering of sickness or of the final agony are reduced, sometimes also with the danger of suppressing life prematurely.
Ultimately, the word euthanasia is used in a more particular sense to mean "mercy killing," for the purpose of putting an end to extreme suffering, or saving abnormal babies, the mentally ill or the incurably sick from the prolongation, perhaps for many years, of a miserable life, which could impose too heavy a burden (both financially and emotionally) on their families or on society.
By euthanasia is understood an action or an omission which of itself or by intention causes death, in order that all suffering may in this way be eliminated.

2. ARGUMENTS FOR EUTHANASIA
It provides a way to relieve extreme pain
It provides a way of relief when a person's quality of life is low
Frees up medical funds and resources to help other (sick) people
It is a case of freedom of choice: its my life and if I want to die, I will!

3. ARGUMENTS AGAINST EUTHANASIA
Euthanasia devalues human life
People play God by deciding who lives and who dies – and how and when.
Physicians and other medical care people should not be involved in directly causing death
There is a "slippery slope" effect that has occurred where euthanasia has been first been legalized for only the terminally ill and later laws are changed to allow it for other people or to be done non-voluntarily
It is a sin – its actually murder.

4. THE TEACHINGS OF THE CATHOLIC CHURCH
Second Vatican Ecumenical Council solemnly reaffirmed the lofty dignity of the human person, and in a special way his or her right to life. The Council therefore condemned crimes against life "such as any type of murder, genocide, abortion, euthanasia, or wilful suicide" (Pastoral Constitution "Gaudium et spes," no. 27).