I would guess it costs more money for now, since now we can expect an increasingly long period of disease and disability before death. This period is made possi

I would guess it costs more money for now, since now we can expect an increasingly long period of disease and disability before death. This period is made possible by improved medical care and palliative care, which is expensive. For example, a dementia patient might cost $300k over 7 years. Medical guidelines (enforceable by law) include many intended life extending therapies such as antihypertensives, antibiotics, anti-blood clotting agents, and so on. By extending unhealthy life, these increase the total amount of care. And as I said that care is getting more expensive. So it's a double whammy. However, if and when life extension technologies are developed then we'll have preventative maintenance for the human body. Many common diseases and disabilities will be avoided plus we won't ever reach the geriatric care phase. The periodic choice would then be between more extension (relatively cheap) and assisted suicide (cheap). So this would save money.