The biggest crash in the history of BTC has been occurred from 2 days ago till now. It' all over now. If you don't buy after reading this post you will cry soon.
It doesn't justify that, you are never going to know if the price is going to go up or not, so for me, it is a 50% - 50% , i am still buying, but it doesn't mean that i will be still be buying at more than $20k for each bitcoin.