Medical technology is improving quickly. Unless there is a global disaster and human progress is set back significantly, e.g. by an asteroid or a global nuclear war, there will come a day when humans can live indefinitely. This does not mean infinitely- people will still die in vehicle accidents, get murdered, etc. Also, at least at first, access will be prohibitive due to costs and possibly outright selection/rejection of patients.
Based on trends in the progress of biomedical research, what is the consensus in the biomedical research community for approximately what year will the average person vs. a very elite person be able to get treatment to live indefinitely?