The internal argument is that it is not convenient for me to need to work only with cash. That is true it is less convenient but when I sacrifice due diligence for convenience then it turns out long term cash is more convenient.
My bank has 27 offices left in the entire Netherlands, and I don't think many of them take cash. I wouldn't even know how to get 3000 euro in cash into my bank account these days.
People don't use cash because there are better options that better meet their needs. Most people's needs don't include "the government can't know I'm buying this"
Is there really no monetary exchange you've made in your life that, if your government knew about, could get you into trouble? And are you so confident in the future of your government that you're willing to give them that power? I'm not.
It's not just the monetary exchange itself, financial transactions include a counterparty and location info too.