Nonsense. You are NOT bound to your brain. If I make a copy of my brain into a cloned brain or electronic brain, and booted it up at the same time I shut down my original, then I would regain consciousness AS ME. Me with my new immortal brain. It would me a smooth transition. If I happen to keep the original brain "alive" at the time I booted up the new one, then there would be simply two me's who perceive themselves to be genuine.
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rfbeck

"So you're bound to your brain. You cannot live forever unless your particular, specific, physical brain stays in tact. If I copy your brain to another cloned brain, yank yours out, and replace it with the clone, everyone else will interact with you as if you were you, no difference; but YOU would vanish into the blackness, you'd stop living, you'd die."