The cool thing about a bubble is we can all be rich on paper, for a bit. If you cashed out and bought stuff, though, good for you for finishing on top.
Of course it can fail! It's all about chances and risks, no?
For me, there is only a small chance that cryptocurrency will truly break through. But when it does, it will be HUGE.
So a small chance X total game changer = a lot of potential return.
If you invest 1% of your portfolio, you can only lose 1%. However, there was (and still is) a small chance it goes x100, which means a total 100% return on your portfolio. So now you have 200 instead of 100.
I was proven right, and so it's easy for me to say I took the right decision. But when it would have gone to 0, it would have still been a smart move to invest 1%.
For me, the stupid people are the ones who are sure about the outcome. While at this point, nobody knows. You can only see the potential or not.
Realizing gains in a shockingly volatile speculative investment just seems like common sense. Particularly so if you can take out your original investment and be "playing with house money" so to speak.