If one looks at gold and asks themselves “why is gold worth 11 trillion dollars today?” How did it, over centuries and centuries obtain such a status?
Bitcoin has better properties than gold does. It’s more scarce, scarcity means predictability, and predictability gives rise to trust.
You don’t have to be a hardcore libertarian- I’m sure not- to appreciate a better version of gold, and what benefits that can have.
Also - the USD is used more for malicious purposes, paper money is actually harder to track than Bitcoin transactions.