A time would come when science would have invented medicines and methods to stop ageing process leading the human beings to a situation where there will not be human deaths. This would in turn cause to multiply the number of people on the world and, in the long run, one cannot walk in the street without rubbing one another. What would be the world like in such a worst case scenario?
We'd have to be off-world and absolutely should be by then. I still believe, because you're fighting a decay system, that there would still be death. Unless we can learn to preserve our consciences which would mean a different type of "living"