It is only a matter of when, not if. Personally I can't wait.
Technically we are never the same. Our experiences change our neural network every second and every day. At age of 24 and 84 we won't react same way to same stimuli, although we are the same person. Or are we?I am a scientist, an atheist, and I don't believe in life after death. Like anybody who understands biology, neurology and genetics to some degree, I consider that the soul cannot exist because life can be explained purely as a series of biochemical reactions. So what is it that makes us ourselves and not someone else ? It's essentially our DNA, and especially the genes that encode the nervous system (especially the brain), which is the true essence of our conscious being. Alter your DNA and you aren't the same person anymore. Or would we ? Would we even notice that we aren't the same person anymore ? And does it really matter ?