#1 - Bitcoin. And Bitcoin's #1 problem is the 1MB limit. I expect none of the bitcoin developers (except Satoshi of course) anticipated that people would actually try to use it already (https://en.wikipedia.org/wiki/Tongue-in-cheek). The Noobs have been unceremoniously walked into that "slow and expensive" wall this winter and they are bitter.
#1 - Bitcoin. And Bitcoin's #1 problem is the 1MB limit. I expect none of the bitcoin developers (except Satoshi of course) anticipated that people would actually try to use it already (https://en.wikipedia.org/wiki/Tongue-in-cheek). The Noobs have been unceremoniously walked into that "slow and expensive" wall this winter and they are bitter.
#2 - The general immaturity of the "leadership":
https://www.reddit.com/r/vergecurrency/comments/7mamgt/xvg_w...
https://www.cnbc.com/2017/12/20/bitcoin-jesus-says-investors...
https://www.youtube.com/watch?v=UTbgbePa1XQ
http://fortune.com/2018/01/08/coinmarketcap-removes-korean-e...
#3 - China
https://www.bloomberg.com/news/articles/2018-01-09/how-china...