If the end is in a facility, you will effectively be euthanized. Your friends won't want to deal with it and extended family members are most concerned with their immediate family members.
I've seen plenty of ending scenarios. Sudden death is best. If you can afford it, avoid facilities like the plaque and have the appropriate nursing at home (your home would be best, but the elder's would be sufficient).
...or actively seek out such a place.
When I see a story about some octogenarian or nonagenarian skydiving, I'm convinced he's hoping it's his last jump (and maybe his first as well).
I know a woman older than I am in Florida, a college professor. She lives alone with a few cats, and she told me once that if she started to get infirm or senile, she would walk out in front of a moving bus. Who knows, that might be a useful way to go for me too, since I’m 58 and single.
“You can evade reality, but you cannot evade the consequences of evading reality.” — Ayn Rand