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Depending on which version or variation of immortality. Ideally one where we are rendered completely indestructible and immune to all harm and suffering. Though I think on a realistic level, we'd ONLY get to never die from aging or the effects of aging, and that's aging only. It's unlikely we'd Never Ever die from toxins, chemicals, viruses, physical trauma, etc.,... Unless somehow if we had been successfully modified and upgrade to be like cybernetic organisms made out of "Machine Phase Matter", a very highly sophisticated and complex NanoMachines that allows virtually immunity to almost all forms of trauma and destruction and would instantly or near instantly regenerate whenever we would ever take any damage or from trauma.
At this point becoming immortal isn't likely going to happen so soon. Unless time travel was possible and someone steals the key to it in the future and somehow brought it back to the present or something because I think that it would be only possible in the very very distant future to the point where our technology had advanced to the point where it's so powerful, complex and sophisticated that eventually made it possible and provide the opportunities for humans to become immortals.
Either that or if Extraterrestrials that are so highly advanced and sophisticated and had already figured out how to upgrade to becoming immortals come to earth and provide us such opportunities or opportunities to upgrade our technology and hardware to make it possible for us to upgrade and become immortals.0