Based on Bitcoin's history, there is no bull run or pump that will be going on forever, time can be coming when it will settle down and do either down or sideways. Of course, not unless Bitcoin can be defying historical data and continue on going up but this is impossible. It is always better to wait for some time and make a move. The last time I thought of buying some BTC was when it reverted to the $18K level, but then I was thinking it can still go down further...I was wrong!