What are your thoughts on this subject? What caused it,
my observation is that this drop was due to manipulation and not much else. it started by CSW's lies about dumping bitcoin and continued by whales taking advantage and dumping bitcoin.
the situation was also perfectly ready for such a drop because of the stability which made everyone bored and most traders to leave the market.
is it healthy for the long term,
absolutely not. volatility like this is never good for bitcoin's image specially when it is volatility out of nowhere and due to manipulation.
when do you expect to see the price back again?
as i said in another topic i think it depends on the the performance of bitcoin in the following month. if it under performs or drops more then we can expect most of 2019 to be the same boring market too. but if it ends this month we can see 2019 to be a bull run year.