The PBS web site has the article Insured for old age? An economist explains the dangers of long-term care insurance.
Although Medicaid laws and limits are given here for illustrative purposes only and are subject to change and interpretation, understanding them does help explain many experts’ contention that there is a narrow window of wealth that should determine a couple’s need for long-term care insurance. At the bottom end, if non-home, non-car assets are below $115,920, Medicaid will kick in to fund the partner who needs long-term care. At the upper end, if non-home assets are above about $700,000, a couple can self-fund most nursing home stays without depleting assets. It is those whose wealth ranges from about $150,000 to $700,000 who have the greatest need for conventional long-term care insurance.
Although I wouldn’t put much faith in anything that is on PBS these days, perhaps this article does give you a place to start thinking about this issue.