Retirement and old age are expensive due to the cost of medical care and nursing care. If people wouldn't need those then it would be possible to retire much earlier.
Part of this is a cultural issue. I completely understand why people struggle with addiction, smoking, obesity, stress, depression, and so on. I don't blame the people, but the current culture of cheap and fast food, stress, overworking, lack of time and/or energy for cooking, family, hobbies, and taking care of health.
Many of these preventable diseases could be addressed by cultural changes and government care, which could decrease the cost of medical/nursing care.
I don't see the problem. So medical and nursing care is expensive. We can change the society so that relatively more people work in those fields. Instead, we are cutting on those services. It's just a thinly disguised attack on the elderly.
Healthcare share of economies is just trending up and up over time, there is very little cutting there. At best you go back a year or two sometimes, as you can see here.