This year the price of bitcoin has dropped for a long time, and don't know how long bitcoin will be like this. I think this is a year of challenge from bitcoin, those who are strong will stay here and the weak will leave, this will be an option to determine the future.
Comparing the price of bitcoin in 2018 with 2017, now is lower. Since the endof 2017 bitcoin has been dropping. However, the price is stable than altcoins. Let we see the altcoin price such as ETH, XRP etc. The down was very significant there are many people moan about this. But bitcoin is still stable on that price. wait for the day.