Understanding how money works. Yeah, the most basic part about having a limited supply and then made me understand that fiat can be printed unlimited. So, with that basic economics there, I've come to realize why fiat and other cost of living has become more expensive year after year. Whilst for Bitcoin, it made me saw how deflation is happening and it's possible through it. And other economical subjects, it forced me to study about them and even I am not good at those things, at least thanks to it for making me realize how they work.