It would be a terrible thing if the Bitcoin pattern is the same as in 2013-2015, it could be the end of 2018 is only about 4000 $ -6000 $, as I think if it might happen?
Let's look at the pattern in 2013-2015 below:

and this is the pattern from 2016 to the present:

What if it really happened, give your opinion?

definetly thats not true,because as far as i look up the coin markets cap now the price value of crypto coins is going high,thats why i thinks maybe this is the things that we've been waiting for because maybe this is the moment that bull run is coming therefore if bitcoin is going pump the altcoins will be follow soon to pump,even though my penny bitcoin in my wallet is growing simultaneously,thats why we conclude and hoping that it will grow back to its normal price value in exchange market,even back to $12k -$15k at the end of these year,thats enough for us to become profitable.