I agree and every day older I think about it.
When my wife was diagnosed with terminal cancer, she had me as her care giver for six years, and due to the nature of my work, I could be with her 24x7 and still make a living - good thing since the last two years she was alive, we went to the doctor and/or hospital almost every day and she was wheelchair bound.
Things are different for me. I recently fell in my shop and lost lots of skin and had other damage. As I laid there on the floor yelling for help, I realized there was no one to yell to so I managed to get up and take care of myself. If I could have reached my phone, I might could have called someone. I can't imagine what will happen to me if I can't take care of myself. My closest biological family is 3000 miles away and estranged. My stepson, when home, is over 80 miles away but is an airline pilot so he's out of town more than in. Two grandsons are away at college, and one is in the US military.
Fortunately, if my Invesment losses stay the same for the next couple of years, I'll be fine until I die. If they get worse (ungodly now) or continue for much more than two years, I'll be screwed. That's one reason I've kept going at my IT Business.