Bitcoin price fall and increase is common, everytime during the fall people will be getting panic and used to sell low missing the profit. With bitcoin one need to have patience to profit rather than selling on panic. This time the price drop is very big, but the same doesn't have a perfect reason behind as every digital coin is experiencinga drop and only very few are in the price pumping.
I agree with your opinion, the decline in bitcoin prices can happen anytime. should not panic in this situation, instead this becomes our great opportunity to buy at a low price then sell it for a high price.