If humans have no rights, there is no right to die as no rights exist at all either given by God or by man.
You’ve negated your own position.
Incorrect. As I've stated earlier, rights are a human invention. They change over time and from society to society. One example: in the United States, we have the right to practice whatever religion we choose, as long as that practice doesn't infringe on the rights of others.
This right has not existed in most societies throughout history.