&gt; Cash is freedom. No one spies on what you do with your cash money.<p>You need to physically visit the other party, so it isn&#x27;t black and white necessarily the best option.<p>&gt; We can see already with the encryption trojan programs that ask for Bitcoins&#x2F;altcoins to decrypt your data - something like that wouldn&#x27;t be reasonable and work on a large scale with cash.<p>Before Bitcoins, it was possible by using wire transfers. This only won&#x27;t occur if you have a fictional purely cash society.