If anyone is buying now, they should know that the price may still fall but they should continue to hold until they make profit and they should consider this as a long term investment.
people who buy bitcoin should never get greedy and think about possibility of a bigger drop. bitcoin history has proven that those who are greedy like this (wait for an even bigger drop to start buying) are taking a much bigger risk and usually are left behind when the reversal occurs.
the best strategy in bitcoin is to buy whenever there is a significant dip while ignoring other possibilities. specially if the price is still above a very strong support such as $20k
in any case the next target after having 1 whole bitcoin could be to become one in a million (meaning to own 21 bitcoin).