Gumby,
I'll be 51 in December. But I do have a wife and daughter. So my personal situation is different than yours.
However, my uncle's situation was similar to yours in some ways. He never married. He retired from a Sears after working for decades as an auto mechanic.
We just buried him the week of July 4th, he was 78. He had a serious health problem with his digestive track about 15 years ago, and just about died then due to a ruptured appendix. But with medical care, he recovered and did pretty well. The last 6 months he ended up in a skilled care nursing home, due to an accident that was not his fault. He worked part time shuttling cars for an auto auction house where he was thrown off a golf cart and hit his head. He was later coerced into signing papers that released the company from responsibility.
He had saved money for retirement. But he also made some good choices after his first health scare. He purchased some long term nursing care insurance, and a few other supplemental polices. That definitely helped the family in making sure he was cared for when he took a turn for the worse. I had to help my dad, his brother, figure out the finances. It turned out to be pretty complicated, but we managed through it.
I guess I have a few points from my perspective.
1) You need to plan on living longer than you think. I don't think you want to outlive your money.
2) Even though we don't ever want to end up in a nursing home, it may be wise to plan for that too.
3) It was complicated for my dad to understand the what needed to be done while my uncle was sick, and after he passed. My finances are complicated, and I want to find a way to make it easier on whomever takes care of me or my estate. (of course, if you spend all your money that makes it real easy)
4) I want to make sure if I have family around (even a nephew), that they might look out for my well being. I don't want the state making decisions for me if at all possible.
I'm saving so I can either retire early, or at least retire someday.
Rick