This is a reverse perspective on the thread Right to live.
If a person wants to die, should they have the right to do so?
There already is a right to die. Everyone has that right, no matter what the government says. That's my opinion about it.
Here is an argument: if you have no right to die then you have no recourse if your life is absolute agony and confusion. In nature an animal that is in permanent pain either dies, starves or is eaten. That is because agony causes a severe dysfunction. It is the ultimate distraction which in nature leads to death and announces death.
Here is an argument: If you have no right to die and someone enslaves you, then you have no choice but to uphold the institutions of slavery. It can be argued that it would be more ethical to die than to uphold that institution. If freedom is good, then for sake of freedom death is preferable to enslavement.
Here is an argument: If you have no right to die you can be made to kill, because you can be threatened with death if you don't kill.
Here is an argument: If you have no right to die then your life belongs not to you but to society, because society can kill you but you cannot kill yourself.
Here is an argument: If you have no right to die it erodes your negative right to pursuit of happiness, hence if you have a right to pursuit of happiness then you also have a right to die.