that's why I pay extra taxes

Great! That's why everyone would use Monero, as a sovereign money.

Everyone's purchasing power? Why are you here?

I might have said the same 2 even 1 year ago. But, only time will tell what has been the best store of value from now and 5-10 years into the future.

Nothing is certain, but every thing from crypto taxation in some countries (particular EU), to BTC leverage and ties to the financial sector and terms like dirty BTC, chain analysis and many cases of scam, robbery, kidnapping and even murder. And considering the current very high market cap of BTC, it seems more than unlikely to 10X over the next decade. As a hedgefund manager you need more than "I believe/hope/feel/think", you need fundamental utility data, security and trust in the project and it incorruptibility. Otherwise gold as a safer option.

Looking at XMR's longterm chart, it has been a rather stable ascending trajectory. You could have bought on top of a peak as with all assets and lost a small amount. BUT, looking at the small market cap 10X would bring monero close to SOL. Looking at the actual transactions, utility and practical use you have an additional insurance. XMR is not just speculative hype it have an function (though it may largely be on the dark web at the moment, it seems to expand to hosting, classified adds, digital goods and donations). So, in a complete market crash I would rather hold XMR than BTC, not that XMR will go completely untouched.