1 If the bitcoin becomes a bubble and burst. This will be linked to the flash crash but this time that looks impossible.
2 If the exchange site will be banned in the various country because of the exchange site as a centra key in the bitcoin or crypto.
3 Too many hackers, scammers in the crypto.
A lot of the things that makes me fear about the bitcoin itself. But the politic and regulatory seems to be a serious thing rather than other.
Yup. The hackers and scammers presence, and fear of exchange sites shout down either by exchange authority or by the govt in the country and at time long internet break fall. I am sure, everything has its plan B. Lets always focus on it which will not stop us from being with bitcoins.