You think that euthanasia should be legalized but have you thought about consequences. I think that once euthanasia is legalized it will be impossible to control it .What about pressure on the vulnerable? They might consider themselves as a "burden of society" and would choose death even if it is not what they truly want. They will die because they would think that it will be right and beneficial for others.

Even if the question is too broad and has no context, I think that legalization of euthanasia is negation of moral and ethical principles on which humanity is based and the terms physician-assisted suicide and murder are synonyms. Legalized euthanasia can be abused by government, doctors and even relatives. It will become a cost-effective replacement of palliative care and medical research for terminal diseases will also decrease. In addition people who are not going to support their ill relatives and consider them as a burden might choose euthanasia rather than palliative care.