Cryonics is intended to save the lives of the people with severe diseases, by freezing them, after their death, at temperatures that are so low that even the decaying of the body is stopped. The purpose of this is to wait until technology and medicine evolves to the point that cures for these diseases are found, and then to thaw the frozen bodies, revive and cure them. An important thing is to understand what is referred to as death - absolute death is considered to have occurred when the information in the brain is destroyed. For us, the patients may be dead, but for the future scientists they probably won't be, just like the people who drowned in the past - they were considered dead, but now they can be revived even after a few hours sometimes... It would be better to perform cryonics on people who are still alive, before clinical death and the damage that it brings when it occurs, but the law currently doesn't allow this.
The problem today is that we can freeze people with cryonics, but we don't poses the techniques of bringing them to life yet. However, it is esentially believed that revival is possible, because some experiments on animals have been successful. Research in this domain of cryonics is being conducted and techniques will certainly be developed.
There already are companies which offer cryonics services, freezing their patients with the help of liquid nitrogen. The prices are not that high as you may believe, but they are elevated - around 150 000 $. A cheaper option would be to freeze your head only - people will most likely have methods of generating a new body from your DNA in the future. A simple search on the Internet and you'll find a list of cryonics companies and offers.
So, if anything else fails, the best option for you is to appeal to cryonics, in the hope for a better future.
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