Immortal Futures: Living On A Post-death Planet

Medical technology continues to advance. The human life expectancy extends further every year. Previously fatal diseases are being cured or mitigated. As the human race continues to find more and more ways to prevent our own deaths, what changes are likely to happen to society around the world? What are the ramifications of a potential future in which death from old age is no longer a concern? What about over-population? What are the implications for work, inheritance, our ideas of family, or even the legal right to die?