A legend doesn't die it simply surprasses it's challenges issues like scaling debate? Malleability? Will get solved immediately if segwit gets activated.
And recent malware that is robbing the users bitcoin is not the crypto-currencies fault but the government and the OS provider itself which is microsoft. The government or to be more specific NSA should have told that there is critical vulnerability in windows.
Why would a digital currency get blamed by this?

As long as two computers survived the EMP explosion then you could continue to use bitcoin but at that point that will be useless but maybe someone will decide to do it just to be able to say bitcoin survived even if the usability of bitcoin will drop to zero at that point.

its true the bitcoins well never be die. because there users increase day by day. there are alot of investors of bitcoins. bitcoins demand are too much increase. bitcoins value are increase day by day. just  fluctuation can increase and decrease there value. now a day the price of bitcoins are too much high because of demand of bitcoins. when the demand well high then the supply well be come low and expectation of bitcoins price well low.

Now a single bad news lately I don't know what news you read.
And I my humble opinion is about time we quit seeing bitcoin as an investment and we use it as satoshi wanted.
A simple and inexpensive method of payment avoiding a 3rd party.

China banned bitcoin about two thousands times and nobody cared (after the first two or three).

Well Bitcoin relies in technology, without internet connection nor gadgets you can't use Bitcoin and it will die for sure. There is no problem with a government banning Bitcoin because we can always use proxy to hide our identity and ip address.

I think when bitcoin use in some illegal activities like buying drugs, illegal guns and some ban items that can't use in the a country. So there is a factor that bitcoin is force to ban permanently by the government.

There are many ways that bitcoin would die, for example : what if nobody uses bitcoin anymore because it is becoming worthless, what if because of world war 3 there are no more internet connections because of the war and what if the government wants to ban bitcoin and wants to shutdown it.

I don't think that your statement is right on the part of "what if nobody uses bitcoin anymore because it is becoming worthless" because to tell you the obvious we are the basis of Bitcoin's price. And what I mean about that we are the ones who are creating Bitcoin's demand as we are the ones who dictate the price of it. Also your other scenarios are too much farfetch as I can't imagine it happening as of the moment, world war 3 is something serious that no country could even think about starting it yet.

yes chances are always there but i think we do not think that it will ever happen, because bitcoin is becoming more and more popular from  day to day, the users of bitcoin are also increaing from time to time therefore i do not think that there are any possibility that bitcon will ever die, hope it will become more and more stronger from day to day.