Personally, I buy it when I feel it a good time to buy at the cheap price and I think everyone has a different time to buying bitcoin. it all depends on the plan of each individual in buying bitcoin for get the profit. Buying bitcoin and selling it at the right price will give you big profits. so as much as possible as a bitcoin lovers we must be able to manage it properly because if we have bitcoin but can't manage it well, then we will only get a loss.