Why capital gains tax is pure theft

Say you have $100,000 you want to protect from inflation.

You buy an asset (Bitcoin, Gold, Real-estate).

In 5 years, your asset is worth $250,000.

You sell and must pay capital gains taxes on $150,000 (at 20% that would be $30,000 in tax).

But over those 5 years, the government printed 10% new money each year, which devalued your dollars by 37.9%.

That means they already taxed you on your wealth each year, so why are you also paying a "capital gain" on the sale?

So the calculation should be:

$250,000 - 37.9% depreciation - $100,000 initial investment

Your actual gain was only $93,150 after depreciation.

But you're being asked to pay 20% on the total $150,000 instead of on the actual inflation adjusted gains.

And even worse, the inflation numbers they publish are fake to make them seem better than reality actually is, so you can't even calculate an accurate depreciation over time (more accurate to use real estate prices to see depreciation rate).

So why the fuck do we allow them to charge us capital gains tax, when we already are taxed every year by the money printing??

Complete bullshit.