I spent 2014 to 2016 working on crypto. I built crypto apps for a lot of companies, including some that are very very big now. Back then, I really believed in crypto. But after the Xth crypto bubble popping, I gave up. So much time had passed, and nothing was changing (for the better). Banks were NEVER going to adopt this (at least not any blockchain that the general public can profit from) and it would NOT dramatically transform the financial system the way I thought.

I had a ton of bitcoins and ethereum. I even bought ethereum in the presale. Present day value would have been around 5 million euros. But I sold it all back then, because I saw that crypto was never going to make a significant impact.

It turned out, I was right. Most of the bitcoin ATMs disappeared, most webshops stopped accepting it, it plays almost no role at all in the financial world. But I overlooked one major factor: the value of these cryptos isn't based on anything else than thin air. People are willing to pump anything as long as they can personally profit from it. And yes, the famous saying applies here: the market can stay irrational longer than you can stay solvent. I saw the fundamentals correctly, but the sentiment wrong.