I usually don't believe in fantasy, I need concrete evidence for something I just know or hear.

When I first got to know Bitcoin, I often read on Google, I read and researched, what makes Bitcoin attractive to many people, then I have a friend who works in one of the government fiat currency exchanges, he told me about Bitcoin.
Long story short, my friend showed me the results of withdrawing Bitcoin to me, oh my god, it turned out to be real fiat money, at the end of the story I learned and got to know several exchanges and made transactions, finally like now.