You might be able to hide your income fairly well but good luck trying to explain where you got all the money from to fund your own lavish lifestyle when you're clearly living well beyond your means. It's no good having a load of money just hidden when you can't even spend it but if you try to buy a house or start buying yachts for yourself etc you'll soon catch the eyes of the law and you'll have a lot of explaining to do when they ask you how you can afford all this nice stuff.
That's as long as the transaction doesn't concern any real life goods. Try buying a house or a car and you'll see how fast the authorities come knocking on your door.
If you want to easily make such big purchase, you can pay taxes only from the corresponding amount. From legal point of view you can declare that you have found buried treasure and in most countries only income tax will apply in this case. If you will show up all your earnings, you will have to pay much more!
Bottom line is if your country requires you to pay taxes then you should. If people don't like them then there are plenty of countries that have no taxes or very little that you can emigrate to.
Why I need to emigrate? Maybe some impostor (govt members) must emigrate to the Mars?!
I don't think the threat of prison, fines or criminal records is worth the hassle personally and I don't mind paying reasonable
BTW, prison is good place to recruit fighters who will hang bastards, who captured the power and want to act like God.
reasonable being the keyword here - taxes as long as they're spent on benefiting society and not wasted on needless wars and bailing out corrupt banks when they fuck up after gambling with other people's money.
Be honest, how many government in the world are honest and think about population's good? 3..5..maybe 10? I don't think more!
If I wouldn't have any chances not to pay taxes then I wouldn't but if it's abided by the law, I will follow the rule. It is part of our duty as citizens of our country.
Country and people ≠ state and government!