Is money in your bank account or locker safe?
Moreover is the money in your wallet right now safe?
Cryptocurrencies are not safer. They are prone to be stolen because you would not have taken your digital security seriously.
On the contrary! Computer security is necessary, even without cryptocurrencies. The current economy is very much dependent on the internet, nothing can reverse that. Besides, you can receive the bitcoin blockchain from satellite, so strictly speaking, internet is not needed for bitcoin, it is just a medium of distribution. You could, for example use a mesh ...