This is a really interesting thread, and it's obvious people have many differing views, depending presumably upon their political persuasion.
Its true to say we are living longer, although many of us are staying healthy into old age. Eventually though most of us may need care of some kind, whether residential or at home. I have experienced both with my parents and in laws. They paid their taxes in over many years, and hoped that when the time for them to need to take something out, it would be acceptable and they wouldn't have everything they had saved for over the years, and hoped to leave to their children, taken away.
I can't agree that as a country we can't afford it. We are the 7th or thereabouts, richest country in the world, you only have to look around you to see the ostentatious spending that goes on (won't mention weddings or anything of that kind).
There is money, it's just a matter of how you raise it, who from and what you do with it. frankly if we can't care for our old, sick and vulnerable, what kind of society does that make us.
I had a very interesting conversation many years ago with a couple of swedish midwives. They told me they are taxed quite heavily, but are OK with this. They said, although they had no children, and their parents were well and fit, at that time they were paying in but taking nothing out. They realised though, and acknowledged that they may well have kids that needed to be educated, and their parents may well get old and dependent and need care. And anyone, at any time can become ill, or disabled. They believed that it was a sign of a civilised society that you pay your taxes, and the wealth was shared out, as was the load. It was very refreshing to hear and it saddens me that we appear to totally have lost any kind of empathy or understanding of the problems that many people face.
Being poor and/or ill/disabled is not a lifestyle choice, so many people have never had the benefit of life chances, good education or healthy living choices. I would like to see a country that is managed for the benefit of all, not just for those who already have more than they can possible consume. I am sad to say though that I don't think we are going to get that kind of country.