I am against cryonics, and here's why (though I would love to hear a rebuttal):

Cryonics seems inherently, and destructively, to the human race, grossly selfish. Not only is cryonics a huge cost that could be spent elsewhere helping others, nature and evolution thrive on the necessity of refreshing the population of each species. Though it's speculation, I would assign the probability of evolution continuing to work (and improve) on the human race as pretty high - what gain does the human species have in preserving humans from the 21st century indefinitely, when 23rd century or later humans are better?

Overall, in no way can I think of cryonics benefiting anyone other than the individual's (I think simply genetic) desire to avoid death (maybe it benefits future anthropologists I guess), and the cost of cryonics, given that, is what turns me off so much. I can understand people indulging themselves every once in a while, but since I tend to think gratuitous selfishness is a bad thing for the human race, I find myself understanding cryonic-phobic people more than cryonics-supporters.

Is this an invalid view?