Is the right to life really a right or is it a duty to live?

A demand for requested death in the human society seems to be increasing nowadays. In some countries, there has been such an institue legitimized. However, this demand is not usually accepted by the branches of state power. The main argument against the right for assisted life ending is often appointed as, what is so called, right for life. These are the appointments in international and national documents, which gurantee opportunity of human beeings' lives, as a unique organism. This appointment first appears in Universal Declaration of Human Rights, which is then used in every other document dealing with basic human rights. Because of some sort of unclear thoughts, when deeper analysing right for life, it is possible to contest and disagree with an interpretation of above mentioned institute and its place of shield against positive efforts of setting the human's right of a decision, how and when to end the life. The problem seems to lie right in the creation of such an institue - which interpretation have had people, who have been creating original document, on their minds? Another unclear thoughts seem to appear in the effort of setting a subject and the content of the mentioned right. The main point is, if the right-for-lifeholder is a human after or before the birth and if before, when..