I would have some... but I lost most of my private keys in an unfortunate boat accident.
Some have special retirement accounts protected from taxation.
Other can deduce borrowed money when it's paid back.
I might have earn them with my business which accept Bitcoin and paid income tax then.
Really, taxation is a complicated game.
And as usual, those with the less money are those who will pay more.
Oh well, guess I'm stuck holding, for the longest time.
If you are planning to transfer "for good" significant funds to your personal account to realize fiat denominated profit, it's always better to declare it and pay for it. Not because of some sort of perverted morality, just because you will avoid potential problems in the future.
As Frozenlock said, as usual those with less money are those who pay more. Everything depends on how big are the gains you want to "cash out". If those gains are big enough, you can easily build a structure that will make you save a lot of money. But if they are not, you end up paying more. You "cannot afford" to save on taxes