Maybe if people believe if bitcoin price not fall (actually fall will always come but not big as when dumped back again)
Most of the time when people want to buy back they wait for a steep dip what never happen as soon as you want to and see the price climbing in the meanwhile. Dont be greedy.
This isn't greed, it is the normal expectation from the people. Further if such price fall takes place, they'll get into panic whether to invest or not. This is how users will always miss the chance to buy at the right price. Once after the 2017 bull market predictions stated that the low bottom will not be less than $5000, but we reached $3000. With this we cannot frame the cheapest value to buy.