In a situation where there would not be internet anymore because without internet there would be no bitcoin at all and no one would be able to earn or buy or even sell it that is i guess one of the things that would be able to kill bitcoin.
I agree with you because bitcoin need the internet to stay alive without internet this forum would never been here bitcoin would have never been made and we would still work at wall mart to support our family everyday.
True I am agree with you that Bitcoin can die only in one situation, if the government of any country fully banned the Bitcoin .then we can think like that but in future we can see that there is no chance of it. Because many countries like Japan, has legalized it in their countries. It is just because of its popularity and acceptance of people. So if we see the researches about Bitcoin in next 50 years it is always in most popular currency of the world.