What happens during big wars? Extreme money printing and devaluation of everything you own. That itself makes Bitcoin the best asset during a world war.
This war if it actually happens which we all pray it doesn’t happen will be a war of nuclear weapons and all have hard of how disastrous this kind of war can be, personally I think there will be no room to actually consider thinking of bitcoin then as the priority will be solely on survival.
But let’s assume it is not a severe nuclear war, yes bitcoin will definitely come in handy as most of the commercial banks will be either destroyed or will not be able to give its users access and this simply means that no access to fiat currency and even the local bank online transfers will be shut down, so for payment bitcoin will most likely be handy here, families from other countries can send help to their families caught up in this countries easily through bitcoin as was done during the Ukraine and Russia wars. But hopefully we don’t get there
A lot of people talk this nonsense about survival, but it is not true. For most people during a world war, they had other issues and survival was guaranteed. If you are somewhere where the fighting is happening, then yeah you probably will have issues with survival. I'll stack Bitcoin instead of worrying about survival in someone else's war. But let’s assume it is not a severe nuclear war, yes bitcoin will definitely come in handy as most of the commercial banks will be either destroyed or will not be able to give its users access and this simply means that no access to fiat currency and even the local bank online transfers will be shut down, so for payment bitcoin will most likely be handy here, families from other countries can send help to their families caught up in this countries easily through bitcoin as was done during the Ukraine and Russia wars. But hopefully we don’t get there