My life experience is probably a lot different than yours. I have lost a lot of family members to horrible diseases. I don't fear death. It is a relief to those who suffer and those who stand by and watch them suffer. It's a horrible feeling of impotence you get. You want to help your family member. You want to make them well. Take away their suffering. In the end you can do nothing but watch as they suffer and ultimately die. I don't want to suffer like that. If my death is going to happen but only after I've suffered horribly then I'd want to die before the suffering. I'd want to save those I love from watching the suffering.
Not to say I wouldn't fight through illness. I'd fight cancer and such. But there are some things that when you get them there is no cure, just death. I choose death.
Anyway, I meant you don't choose when you're born but you could choose when you die. Maybe you wouldn't make that choice but would you really deny others the opportunity to make that choice?