I'm going to say it again: if we're talking about a worldwide (or even country-wide) internet/computer shutdown or EMP attack, we're talking about issues
way worse than just not being able to access Bitcoin. Both of these would likely lead to very violent events because the most important industries (including food and other products and services considered a need for survival) would be affected as well. Just imagine how your life would've looked this week if there was no digital life for all your actions.
During times where this becomes an issue, gold hoarders would be those who
today are already rich. But after all, the average person would likely exchange food for food rather than food for gold or BTC.
And then, let's talk about portability. According to
Business Insider,
"The average American family has $40,000 in liquid savings, across savings and checking accounts" (this is information from a 2016 survey, but whatever). Add 1/2 more of $40k and you'd have to carry 1kg of gold with you if you wanted to hold your savings in an offline asset you can transact with. Now double the total savings and good luck not being the target of thieves and other criminals, because the more you hold in gold.. the more you'll have to carry, obviously.
Now back to BTC, you can literally hold the value of the entire Gold supply in the world on a piece of paper - or even carved in a tree branch. Under hard times such as internet/computer shutdowns, transacting with gold and assuring it's not fake is a huge headache from start to end - especially when you have no previous knowledge about precious metals.
Bitcoin is not gold. And they share one, strong common point: none of them are perfect.