Bitcoin has it's lowest price of all time, this is the right time to buy bitcoin because bitcoin market is down and in the end of 2018 bitcoin will touch 20k$ above again....!!
In my own opinion, right now is your biggest opportunity on investing in cryptocurrency because the market prices today is currently dumping and you will surely earn a huge amount of profit when the price goes back to normal.
If they bought some coins when the price was at $6k they could earn thousand already today and for upcoming months but since most of them panicked they missed the opportunity to earn higher. It isn't too late now to buy, there will be a plenty of opportunities waiting for us.