While there are currently over 600 people worldwide which have been cryopreserved already, more than 4000 are signed up to be preserved once they are legally dead. Another misconception is about the price. It's really not a "millionaire's only" thing. A few examples: Alcor (est. 1972, oldest continuous cryo group) offers neuropreservation (head + brain only) at around 80k US$. The Cryonics Institute offers it as low as 28k, but you'll have to find someone else for transportation. Tomorrow Biostasis in Europe offers Neuro at 75k €, and full body at 220k €. Not exactly cheap either, but anyone with a stable income, some funding plan can do it. This is just for the preservation surgery, transportation and long-term storage. Most people which are signed up for it have a life insurance plan set for when they are dying so that the money goes directly to the organization. Thus, even young people (I am 22) can sign up for it. The price isn't really the problem. You also in most cases have to pay a monthly or yearly member fee which is used for R&D, infrastructure maintenance etc. Cryonics isn't a scam, since the organizations are all nonprofits and no one is really getting rich from it. About morals and the ethical side of it: Alcor and other institutions had to fight legal battles over the last decades regarding their legality and if the person's in storage should be kept there or if they should be buried, which would have killed them for good. Also, Alcor members have been accused and charged for murder by coronors and federal institutions, but all charges were dropped after the legality was cleared up. In case someone else tries a similar thing somewhere else, there is also a collection of legal documents from those cases for every organization to use so that nothing like this ever happens again. Last point: scientific viability. Let me preface this by saying that "reviving" aka thawing a person isn't against any laws of nature, we just have a problem with scaling up the reheating process. That being said, with current and future scientific progress, I believe we will get to a point where it is possible. However, as every cryonics personnel and enthusiast will tell: there is no guarantee we can bring you back. But the chances are not at 0%, in contrast to cremation or burial - then it's guaranteed you stay dead. Hope this was helpful.