Increase in lifespan, will result in an additional problem, extreme population increase. This would mean possible food, water and space allocation issues. In addition huge to amounts of increased pollution.. for those of you who are highly concerned by that. As more people will need to keep buying consumer products and traveling. If immortality from death due age or disease became possible. All these issues would quickly slip out of manageable range limits. The only possible population control measures would be expand to other planets, mandatory termination date.. ie come in for euthanasia you have lived to long, government regulated birth allowances. And Initially this will only be available to the ultra rich, then the moderately rich, then
the someone will decide it should be a right of all man and the middle class will be forced to foot the bill. I do see benefits of lower medical costs in resources wasted on disease, and people being more productive in society due to better health - assuming they choose to work, and a better knowledge base due to increased possible life spans. In general this requires proper balance.
Also you we may see a huge increase in substance abuse and similar risk taking due to perceived immortality, which could also cause problems. However using gene therapy to extend my life I may be able to live long enough to see a return on investment for my academy tech
That is my point of view.