I am happy as you all for reaching $6000.
But I am worry about the crash in 2018!
Reason:
1- Only bitcoin from all cryptocurrency is moving far far away from all other coins.
2- Ether is moving slowly up and steady.
3- As we are all aware 2/3 of all high profile ICO either are scams, or legally scams to be announced.
4- At least 3 from $50m + raised ICO are having problem executing!
5- EXCHANGES..EXCHANGES...EXCHANGES...THESE ARE THE TICKING BOMBS..
none of the things you said here have any direct effect on bitcoin price that warrants any reason for a crash or causes some concerns for a crash.
some of them have some indirect effect such as exchanges, if they get hacked but it is "indirect" because it still has nothing to do with bitcoin and such cases never cause any big or even long term issue for bitcoin any more. the days of MtGox being only bitcoin exchange is lone gone and now exchanges consider themselves lucky if they have anything near 10% volume of total vol.
other stuff such as ICO are just irrelevant.