I know this, it just rubs me the wrong way.
As a business owner I often have large amounts of cash on hand and it pisses me off they can do this.
Also crossing a border with "excessive" cash is illegal. That's nobody's damn business but my own also.
Hint: Buy a shitload of gold chains like a rapper, wear them across a border crossing and it is considered jewelry. No matter the value.
Cash it in if needed.
(my emergency bug-out plan includes gold)
But it seriously pisses me off that they can steal my shit.