yeah you are right bitcoin only die if people stop using bitcoin. And bitcoin also die or close if all country's government put BAN on bitcoin , hence it's impossible to ban bitcoin as their was a big community of bitcoin from the all over world (japan acccepted bitcoin so i dont think any govt ban on bitcoin)
yeah its just one situation to die bitcoin when people stop to using bitcoin.
But do you really think that people will stop using bitcoin in near future as bitcoin is like an addiction once you start using it you will only keep on looking the ways to increase it so that you can get better benefits in future so I don't think that bitcoin will ever die in future.