Today Watching as Bitcoin has risen more than 1500 dollars, I would like to hear those skeptics who negatively spoke about Bitcoin or even talked about his death. It seems to me that I did not shut my mouth when Bitcoin grows further.

Do not worry about it, most of bitcoin users are trader, So bitcoin will always flowing. I agree that bitcoin will die if no one use it because we are who give this awesome and usefull  thecnology a value as money. The number of bitcoin users are increasing so it will not be die.

IMO, Bitcoin will die if there will be a big war that will happen because a lot of countries will be involved to that and there is possibility for a huge chaotic situation that can destroyed a lot of structures and soon it will make a lot of people panic and they will sell their bitcoin until bitcoin will get a lot of dump and it will die.

I dont think bitcoin addresses are get cracked very easily or its impossible for now or in near future, people are getting to know more about bitcoin so far it easyy to use and people are using them so no to "die" because of  "not achieving mass adoption price" its fluctuate like fiat currency exchange

About cracking bitcoin address..... even if you start cracking an address today, it would take 100s of years and maybe forever to crack a single address and the most feared is the quantum computing which occurs at atomic level and consider 0s and 1s at the same time using superposition principle and is said to just destroy the bitcoin blockchain and also mine all the coins instantly if applied to bitcoin mining.

I think only two incident can make bitcoin die. Firstly the price decrease for sure. because we all invested in bitcoin because we know bitcoin has a huge potential to go up in future. So if bitcoin price decrease to an insane level and we see no sign to increase it again, it may die.

secondly, legality issue can destroy bitcoin also. If the governments decide to ban all websites related to bitcoin and start cracking up bitcoin users, then also bitcoin will die unfortunately. However, none of these two incidents would happen very soon and ever.

First: There's just too much people that are all-in for the long haul in bitcoins. If the price decrease, some will just hodl, some will protect the coin and put a wall so the price won't go down any further. It's pretty obvious that if the price goes down insanely low, then people are going to pick the coin up, collect as much as they can in hopes that the price would go back to normal and earn profits.

Second: Ehm. Legality issue, I don't think that can ever be considered an issue because bitcoin resides on the Internet. The government has banned tons of activities on the Internet but we have online gambling, porn sites, and drug deals in one quick google Search. And then the deep web has become a total marketplace for people that can't put their online store in the normal web. And it seems that very little to none of this people has ever encountered "legality issues".

Internet is freedom.

exacly. and making it go back to zero means that there will be no more demand to bitcoin. and i dont think it will happen that the market cap will go back to zero. bitcoin is becoming more popular right now and i dont think there will be something that will make it dead.

I know that i am late to this board, but it is my understanding that if one miner or owner of bitcoin controls more than 50% control they could potentially ruin the system.  Thoughts?

We should know that bitcoin is a business, we all are doing business with bitcoin and earn from it. So how we forget it every business has a lose, I mean may be one day we see bitcoin price is going down and down, than definitely people sell them, and then the day will come, when people left the bitcoin. So its mean bitcoin is die.
But i am very and faithful well wisher of bitcoin, so i don't want that the day will come when bitcoin die. But now still bitcoin is good and successful crypto curency, it will not die very soon.