Agree with the poster up thread - where do you draw the line with regard to dictating how people spend their income?
Family A who live comfortably with good food, one or two holidays a year, renting because they prefer not to buy - will not have a house to find care home fees and so will be state funded if required.
Family B who choose to save, no holidays (or few, local ones), pay into a mortgage - will have a house to be sold to fund care home fees. Why shouldn't family B choose to spend money on their children and thus have state funded care if needed in the same way as family A?
Or do we go through everyone's bank statement at age 70, judge their every financial decision and then fund their care or not depending on whether overall we approve?
To answer the original question - we have a Family Trust which owns our house. There are listed beneficiaries (our sons, their children should they have any, our immediate relatives) who may benefit from any income to the trust. If our house has to be sold the money will go into the trust - which may approve a house purchase for the boys with any proceeds but should that house be sold (eg due to divorce) the money goes back to the trust. So ex-spouses can't take money away from the family although they may benefit from the use of house and trust money while they are married to the children. And their children will be beneficiaries.
Any use of trust money has to be agreed by a trustee meeting (currently me, DH and our lawyer). If we die, there is provision for the trust to take care of the children including uni education and to provide for a named family member to be their guardian (and support her while she is their main carer).
It sounds more complicated than it is!
Care homes may or may not be needed. If state provision isn't available or appropriate and there is money in the trust, it may approve funding. However all decisions have to be in the entire family best interests - selling the family home to fund care fees for one member wouldn't be authorised.
I fully intend to leave my children with my work ethics and the education and ability to be self sufficient. However I also intend to leave them and their children with a firm financial base.