Everybody Freeze! The extropians want your body

Since you asked for an alternative view in the post that was deleted, here's a fairly readable one:

http://waitbutwhy.com/2016/03/cryonics.html

The author ends up in a moderately pro-cryonics position. The most important parts, to me, were the analogy to a medically-induced coma; the supposition that, if cryonic suspension becomes fully reversible some day, it would be treated as a normal part of travel and medicine; and the cryonicists' own admissions that they don't fully expect the process to work, but merely hope that it will. There's also a pretty long list of pro and con sources at the bottom of the article.