There is a man, possibly a genius, maybe a crack-pot. Myself, I'm skeptical of course, but who wouldn't be in the face of such amazing claims as the ones he makes.
This man is Aubrey de Grey. http://en.wikipedia.org/wiki/Aubrey_de_Grey
Now Aubrey believes that we are very close to curing aging, and making it possible to basically live forever.
Now given this choice... If you're say a Christian or Muslim, would you be willing to risk death in the belief that you'll die and go to heaven, or would you opt to take this treatment that could keep you alive forever?
I think that most people, bar the most zealous fundamentalist, would naturally opt to not die. Now if you're a Christian or Muslim or Hindu or many other things, if you opted for that, then I would say that you really don't believe what you claim to believe.
Now for a plea... If you would opt to live longer, please be honest enough to admit to yourself, and maybe in time admit to others, that you do have doubts about your beliefs. That you don't really believe it, that it's actually a comfort blanket for you, and eventually you may with the help of people here and elsewhere, be able to let go of these childish ideas, and accept the world as it is. It's time for us to all grow up and be mature sensible adults, our future society really depends on this. We only need to look at countries where religion in law to see what will happen. Pakistan and India being good examples, Pakistan under strict Muslim rule is not a very nice country, India under secular rule is really improving, it's the same all over the planet, religious rule gives horrible results.