I did a "stupid" thing when I was "young": I went all into Bitcoin. No more fiat... Now I laugh to all that didn't listen to my advice. https://i.postimg.cc/NF2WYKj3/old-stupid-things.jpg
The same thing happened to me, I will always remember the idea when I was listening to music with wireless headphones and I said, why do people still use cable (although I know this is debatable)? at that very moment I thought, I'm an idiot, what am I doing saving in Fiat?