In all seriousness, if silicon valley titans get their way and do end natural death, a national income scheme would be required...along with regulating birth rates to a limit where the world can feed the population, and yet, incentivize humans to actually do work that is not yet automated.
seriously, if peter thiel, sergey brin, and a host of others have their way and their medical investments cure cancer and heart disease, and everything...this world will be thrown into turmoil like you've never seen. a movie recently explored what this world might look like, and it was a great flick!
http://www.imdb.com/video/imdb/vi775265305/