I'm going to be a bit morbid here, but of all the diseases or mechanical ways to die, which would be your LAST CHOICE if given a preference. Dead last, so to speak.
Leprosy. Nobody recognises how horrific it is, that nobody will ever be able to physically touch you, hug or hold your hands again. The damage happens to nerves, lungs, skin and eyes, and symptoms take upto 20 years to appear.