The US average for a skilled nursing facility is $108k/year. Men will on average use 2.2 years of care, women 3.7. The challenge is that the cost of long term care is going up by 5% annually.
The bottom line is that we all need a plan for long term care. If you have less than $500k net worth, chances are you will end up using Medicaid to cover care (after you spend out everything).
If you have over $3 million, you may be able to self insure. Stand alone long-term care insurance policies can help people in the middle.