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Given current developments in a range of areas such a nanotechnology, cloning and extreme life extension, I think it is more that a little unfair to call interest in functional immortality a "fantasy trip for immature technogeeks who aren't willing to accept the fact that everything dies at some point." We have experimental gene therapy treatments which demonstrably double the lifespan of mice, and if we can find a way to take that and apply it to humans with similar effect, that is a game changer. While the prospect for seeing printed replacement clone organs within my life-time, let alone my childrens, is very good.
I don't think wanting to enjoy a long and happy life, free from suffering and imparement is "masturbation."
Cloning isn't as far along as you think. While we have the physical success of Dolly and the like what we're finding out is that cloning introduces a ton of errors into the genetic sequence, which has the usual consequences. There's also the ethical issue when you realise that to get Dolly, they had to abort hundreds of non-viable failures.
But the more serious threat is life-extension and potential immortality. The only thing that made the rich tolerable was the fact that death made them equal to us. Immortality would give us eternal domination from ogliarchs that would only get more powerful over time. I can not imagine a greater long term threat to democracy.
Death is how we make room for those who come after us.