(1) The idea that the ultra-rich may be able to survive into the future cryogenically while 90+% of the rest of the world dies is morally abhorrent.
(2) Fearing death so much is viewed as cowardly.
(3) This is a bit more abstract, but the implicit assumption in cryogenics that death is a universal bad is troubling. Thousands of years of human thinking have determined that the prospect of death is an integral part of the human experience and may be the thing that provides life meaning. I don't know about anyone else, but the idea that the coming natural death of me and probably everyone else in this thread is on par with a genocide is upsetting (and I personally choose not to believe it). From Epictetus: "Death, for instance, is not terrible, else it would have appeared so to Socrates." [0]