The problem I've always had with this (intriguing) idea is that the original container for consciousness, the brain, usually needs to be taken apart for consciousness to be transferred to a machine. So the original consciousness dies, and a carbon copy is set in the computer...While the 'new' consciousness wouldn't be able to tell the difference (seeing as it had all the memories throughout the transfer), the 'donor' would be dead. So it wouldn't be life after death, or eternal life, but mind storage instead. That's also my problem with the Star Trek implementation of transporters...but that's for a different node, I think...

update after inspiration from KitLo: That too. The body is not a receptacle for the brain; the mind doesn't control your arms and fingers with a system of pulleys or something. The brain and body make a person, who has a mind...Perhaps taking the body off of the brain is as damaging as taking the brain out of the body.