In case of a massive humanity crisis, all traded assets would go down and that may include Bitcoin when holders would just choose to let go of what they are keeping for years to get the funds they need. This is just a natural reaction but there is a chance that in a case something like this Bitcoin will eventually be a winner as more and more people will be looking for safe haven of their assets. Now, everything we are saying here can just be hypothetical and what can happen in the real world may not be the way we imagined them to be. So far, we have not seen a game-changing event that can be a model for Bitcoin (or any crypto for that matter) in such a cataclysmic scenario. Let's hope we will not be able to deal with this concern in the coming years.