[user104658]

There's also the fact that anyone who is moments from death is likely to be a fair bit of pain... it's not like TV / movies, death is pretty much a sh*t-show. So most people would at least take some comfort in that, knowing it's about to be over?

Either that or if it's a more drawn out death, they'll have you pumped full of diamorphine. In which case you won't really care much about anything at all because you'll be flying over a rainbow on a unicorn .