What do you live for? Why do you work? To what end? Is this life just a ride you get to experience for 80 years or so, if you're lucky? Is your reason to be alive to serve God or some other purpose? Is it to serve others? Your family? Or is it to serve yourself? To what end is the purpose of your life? Is it the attainment of virtues? The fulfillment of values? To what end?
I believe that no matter the explicitly articulated reason someone thinks they live, the real reason is personal happiness. It is the only end for which all others are sought. For even while serving others, a person who prides themself in being altruistic, necessarily aims their actions at that which is perceived to make them most happy. The morality of self-sacrifice is nothing but a myth. In reality, it is impossible to practice consistently, because it will surely result in self-deprication. What is really moral and by extension practical is what is in a person's self-interest. The more closely a person orients themself towards or in regards to reality, the better they will be able to reason what it is that is in their best interest. And as a result, stronger and more capable of helping those whom he or she values, for if someone helps, not sacrifices, but helps another, it is always because the helper gains a value perceived to be worth the effort. It is being aware and capable in this world that is good and moral. This place is all there is, all that can be known to be and is what is real. It makes possible all life and the only thing worth living for, happiness. It is moral to want more and to fight for it, if necessary. It is selfish. Not at the, or any, expense of another. It is good.
It is now known that after a brain is electrically silent, which can occur either with the use of large amounts of general anesthesia, when the brain cools past a certain temperature or when the brain is without oxygen for more than 30 seconds or so, not only can it be rebooted, but consciousness as well as physically stored and organized memories can be restored and sustained. Theoretically, prolonged vitrification, or cryostasis, can as well retain one's personhood, which is physically stored in the brain. We are currently well underway, albeit still in the beginning phases, of nacent major technological breakthroughs that will change the world. Why guarantee the ending of your existence by embalming your decaying body and placing it in a casket underground or burning yourself to ashes and having them spread over the sea or placed in an urn? You want to serve your family and loved one's? Stick around! Why not respect, honor and celebrate yourself by getting cryogenically preserved? Why simply throw away a chance, albeit a small one, at more happiness, more achievement, more learning and more time with loved ones without disease and morbidity? There is nothing else, no other 'after-life', for those of us mortals born too early to reap nascent, but still too far off, radical life extending technology. I think it can and will be done. At worst, my form is preserved in a tank, rather than perverted somewhere else.
I believe it is clear that the achievement of sustained prolific happiness is a most moral end to our actions.
For more on information and discussion on where we are now in the science of human cryogenic suspension, watch these short videos on the Alcor Life Extension Foundation website:
Suspended Animation By Vitrification, Link: http://www.alcor.org/Library/videos/vitrification.html
Limitless Future, Link: http://www.alcor.org/Library/videos/LimitlessFuture.html