But that's the thing, Death is synonymous with our being biological creatures, the difficult part is to keep the emotive argument and the logical argument seperate, there are many reasons why people might resist the idea of losing their organic body, I can understand that, but most of those arguments are emotive, it involves things like 'the nobility of human nature' and the 'fragility of the soul' and 'the essence of love', absolutely none of which are quantifiable values.
To start defining these things as 'right' or 'wrong' is wholly a question of perspective, they just are, and are, in all likelihood, inevitable, without wanting to give Evolution a 'purpose', it's what we were designed for, and we've being steadily doing it for Aeons, clothing, armour, houses, prosthetics they are all attempts to modify the world around us, or ourselves, in order to achieve a longer, safer and better life.
It's all very nice to read stories about how artificial life might fall in love, or how converting ourselves into robots might dehumanise us, but we also need to bear in mind that these people are authors, they deal in stories and emotions, and the very same concerns that are mentioned here are what powers those stories, but they are still only stories, not factual recountings.
My father had Angioplasty performed on some main arteries earlier this year, after a heart-attack, 10 years ago, he would have died, it's a road we are already on, and everything in our nature prevents us from turning around.
Edit : As for the fact of Death, I agree, you will never, ever completely remove Death from humanity, fly a ship of constructs into a Supernova, and they're dead, end of story, but there's also the question of Age, of Decay, of waking up in the morning and wondering where that muscle twinge came from.
It was only a couple of centuries ago that witches were burned at the stake for providing natural remedies because it was 'up to God' whether people survived an illness or not, that sentiment died out and now Medicine is completely accepted, same in this case, we will grow, we will change and we will adapt, if we didn't, then we would have stopped being human.