I think the popularity and effectiveness which will make bitcoin survive into a digital currency. besides bitcoin also have to tackle the problem of delay in delivery occurring for some time.

Ok but the issue with the high transaction fees could be a treat/problem because this will not impress common man the adoption of bitcoin and if you check the price per bitcoin now is at $1029. I guess this is because of the transaction fees and coinbase were thinking of stopping the act of no transaction fee.

How and why would the end of bitcoin (and any other cryptocurrency) occur?
If all their price value will crash down to zero value, and their users will disappear, lastly if all traders in crypto world will also be gone, I think that's how they're gonna die.

it will be possible to die if most of the countries banned the bitcoin .
But I don't think it will happen with Bitcoin Because with the use of bitcoin the people are earning money and increasing the economic level of the country in which they are living .

I really doubt that "every" country will decide to ban bitcoins permanently. There will always be a country that will choose to not follow the trend and decide by himself. Just think about it, if every single country has banned bitcoins except you, then all of the exchange sites will be based on your country. Thus, you will earn all of the tax that every country used to earn from exchange sites.

Let's say that hypothetically all countries decide to ban bitcoins. People will just do person-to-person trading and bitcoin will be seen as purely a black market. Seriously, tons of things are banned in this world but how come people are still doing it as if it's not against the law at all.

Value decreases and legality issues it will not be the end of bitcoin. Very reasonable in bitcoin if value decreases because it fluctuates, it can even be utilized to get profit (by buying and holding to go up). If legality issues I believe each country has each policy, there must be supporting and banning. Bitcoin will die if all countries banned bitcoin but I think it will not happen because as I said before, it is impossible all countries banned bitcoin. Different technology maybe can replace it and make users leave bitcoin, so bitcoin will die slowly. But this will not happen if bitcoin can update their technology so that users will continue to be interested. I think basically bitcoin will die in situations when users have started not using it (either because there is a better or technology does not grow).

When the server or source file corrupted and it cannot be recovered. When the electricity gone, when the nuclear war breaks out. Those are things might happen.

That is true and I cannot question the loyalty of the bitcoin supporters to bitcoin. But the author does not question the loyalty of the bitcoin community rather he is asking for possible reasons and conditions that will endanger or threaten the value or worth of bitcoin. This is important since if we know beforehand the problems that might destroy bitcoin we can make some countermeasures so that bitcoin will not die.

The spirit of positiveness is in you, like me I do not think too much that bitcoin will gonna die or end. We should fight for it because it helps us alot and for good future of us. The delay of transaction is normal to this kind of business.

But even if there was no internet for some time your balance should still be there as long as someone has a copy of the blockchain, it isn’t? So after you got your connection back then you could just synchronize your wallet and you will have your bitcoin.