Keep buying bitcoin needs more analysis because bitcoin price will not just stay at one lower price, but the price can go down and touch another lower price. So you need to analyze more when bitcoin price is down, so you can get bitcoin at a low price, even if the price is down, you can buy back again to get another low price. I remember what happen with bitcoin when the price touches the last ATH, and suddenly, the price is going down too deep for almost 3 years. People lose so much money from bitcoin, and many of them desperate to see their money reduce a lot. But right now, some of them are happy because bitcoin price can increase more than $10k, so they can recover their loss.