People tout quantum computing as a BTC killer but I disagree because its not like q computing will pop up out of the blue, this is a world changing technology that we will know is coming before it arrives. I think the bribery of miners by governments is the biggest danger. At the end of the day it was a currency that was the final piece to the puzzle when it come to bitcoin, basically money so what is stopping other entities offering more money to miners and where is the past evidence that miners are loyal to bitcoin? I think the majority are loyal to the $$$$$$$