If you end up in care, you'll just be giving all your money to private care providers if you try to just keep it all. My Dad's care was something like £40k per year for fairly standard dementia care (that was one of the cheaper choices as well).
I'm currently trying to sort this out for my mum. She's currently in hospital and they tried to send her down the fully private route without checking her financial situation. She may well qualify for state aid of some sort which could then be topped up by private money I think. Private care could well cost in excess of £80k a year where she is and when your money is gone you may get kicked out.
In respect of this thread my mum keeps pointing out I'll inherit most of her ailments so I'm going to reach a point soon when it makes sense to spend some of our savings rather than look to carry on growing them.
One thing to spend them on is private health care, mum has been constantly let down by the NHS over the years and she would have had a better quality of life if she'd gone private to sort a few things out.