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....!!
Yes, bitcoin is the main one in crypto and the best, the market is falling and this can be an opportunity to buy bitcoin. The market will grow and the price of bitcoin will increase and we can benefit.
In my own opinion, it was the best time today to invest a huge amount since the market price is still down to $10k dollars and when it pumps up again then you will surely earn a huge amount of profit.