There is a limitation of everything. So, of course, bitcoin will be destroyed at a time. Some superpower will destroy it.
and I also think the internet can destroy bitcoin. If there is no internet, there will be no bitcoin, because the entire blockchain wallet, transfer, trade, selling, buying and spending needs internet. I dont think that world war will destroy bitcoin because if there are people in this world they will start it again and after some time it will again prevail all over the world, but the condition is that internet should be there.
When and internet system is down, practically bitcoin is also down.