We have income from pensions that are invested and will be bringing money in until we die. If we need care, it comes from that same pot.
It's not difficult to work out, it has been mentioned time and again on this thread
You have no idea if it will cover your needs, unless you are very wealthy. My mother and her second husband, very wealthy, properties, pensions, cash etc etc.
They paid for private health well into their 80's, when it hit £1800 a month, they gave it up. Then had to go via NHS, they were at the doctors, or in hospital every week. They had ambulance services out regularly. They had between them, dementia, several cancers, heart disease, mental health problems. They initially paid for live in carers, at £1k a week. Then one went into a care home at £1.3k per week, then the other at an additional £850 a week. They only claimed attendance allowance from the state, as they had plenty of money. However, how long do you think that money lasted? And how much, I can't even contemplate, do we think their NHS care costs were.
Being old costs money.