Demographic Logic of Care Cost Changes

The gov is right to change the system re care costs as people are living longer and will have to make provision for costly care expenses that cannot be born by the taxpayers ie the young.But it should be phased in over decades not straight away as people were led to believe they would be taken care of and so made no provision. For the same reason if welfare was abolished it would have to be a phased change so younger people would know in advance the system had changed and factor that in to their money management over decades whilst those over say 35 who have paid into the existing system would still receive the State benefits..