Im sure if we could all pick our death, we would probably live the latter parts of our lives significantly more comfortable, knowing the end wouldn't be horrible:
Aspirating on our own vomit after falling and breaking our wrist (how my grandmother went into a coma that lasted 11 months)
Suffocating on our own fluids with no one to help (other grandmother)
Languishing in a hospital bed for 2 years slowly dying of inoperable brain cancer that left you unable to walk or care for yourself (uncle)
Went to sleep and never woke up (grandfather)
Went to sleep after drinking a large mason jar of shine (no kidding other grandfather)
I know which one I would choose
Choosing our death would eliminate the need for Palliative care, who would wish for that death? There would be more happy people, and no nursing homes, we would all live the live we chose. More or less