...unless you can afford it.
My 85 year old Mom has had dementia for ~2 years now. First year we (my 2 Sisters and I) took over her finances and put some things in place that allowed her live alone in her home safely. It progressed to the point where we had to hire a nurse to come in for 10 hrs/day 5 days a week, and I've been covering the remaining two days for the past year.
On Friday, Mom's nurse called me saying that Mom had lost consciousness and they were in an ambulance on the way to the hospital. That's where I've been for the past two days. Mom's okay now but will be in the hospital until Monday for tests and observation. Doctors strongly recommend round the clock nursing care from now on, and we're setting that up so she can stay in her own home rather than go into a convalescent hospital.
Mom has no private insurance to cover long-term convalescent care, which will now cost ~$100K/year. If we weren't in a position to pay for it she'd probably have to go into a county facility (and believe me, you don't want your Parent(s) to have to live/die in one).
Word to the wise - To be cost-effective, such a policy has to be in place before a certain age and there is generally a five year waiting period after you purchase it before one can obtain benefits. I'm looking into a policy for my Wife and I now. There's nobody in our family who's prepared to take care of us if/when the time comes.