They care when people owe them money, the same way you care when people owe you money. They prefer not to have to bother to send someone to your house because even though you'll be the one paying for the extra costs, it takes time and effort spent better on other things.
I'm sure the "taxation is theft" crazies will have some legal fanfiction about how the government can't just take your money if you only use cash but in practice you're only getting yourself into trouble for no good reason if you try to commit tax fraud.
Pretty sure, yeah. My tax forms have always been filled in for me because the government already knows what I earned from what company. It's why doing taxes takes five to ten minutes every year. With income tax held back automatically by the employer and VAT and other tariffs added directly to the store price, I've never had to think about this stuff.
It's possible that I may have dodged a few dollars of taxes when buying crap out of China when they put a fake bill in the outside to dodge import taxes, but I don't believe there's a way for a consumer to manually pay those once the package has crossed the border undetected. These days they've changed the system, though, so I don't think it would happen again.
Sounds great. I have a business proposition for you.
I will pay you 1000 dollars for the right of taking every single asset you have if at any point it is proven you haven't paid all your corresponding taxes.
This is free money for you and your sense of justice. I can send a contract as soon as today.
I'm sure the "taxation is theft" crazies will have some legal fanfiction about how the government can't just take your money if you only use cash but in practice you're only getting yourself into trouble for no good reason if you try to commit tax fraud.