> Religion is a lie

Anyone who says "we will have within this generation technology to extend your lifetime indefinitely" is lying just as much as the priest who says he knows God exists is lying[1]. I would say it's more likely that the scientist liar is accidentally right, than that the priest is; that doesn't make either of them people you should trust.

At the current stage of technology, belief on this process is basically based only on hope. Belief in this is essentially religious.

[1] possibly they both believe they are saying the truth, so you could argue they are wrong rather than lying. They are still both standing on the same grounds.