[1] https://en.wikipedia.org/wiki/Electromagnetic_pulse
Some powerful EMP or CMP, or any other dangerous shortcut can destroy much more then bitcoins, destruction will be everywhere, human lives can be lost, why would we care about bitcoin when there is more important things in life, or I am wrong?
This is 1003 topic about what can destroy bitcoin, and I always pay attention on this topics, I always see some new original answer that makes me laugh a lot.
Err. You're probably right. I've always thought that EMP only affected electronics LOL. Didn't think of the possibility that it's also physically harmful to humans etc. Looks like I need to do more research on it.
Make a paper wallet and save your private keys on paper, in that way your bitcoins will be safe. After you will be able to recover your wallet, simple don't you think? That is a good reason to make one just in case if you are really afraid from some global blackout.
But yea, private keys on paper is a must.