In my opinion, the chances of survival can be greatly extended by distributing one's intelligence across a network of separate but interconnected "selves" occupying a wide range. This would lessen the chance of total, sudden annihilation from accidental or intentional means but increase the frequency of smaller, localized losses to the overall system. It's a trade-off that some people might be willing to accept.
In response to the OP, I expect to live another 80 or so years. After all, I'm a healthy 17 year old who eats well and doesn't smoke. I'm also thinking about CR but I have my doubts. Obviously this could be greatly extended if cryonics turns out to be reversible.
I agree with your first phrase, it is like the general financial advice to not put all your eggs in the same basket; maybe we should do the same with the information that makes us- store it in different "banks"