People who are waiting for the price to drop before buying , what are they waiting for when they have the money? I don't see any reason why some people will chose to wait when they have the money to buy bitcoin. For me, individuals who always think about waiting for the price to drop and buying bitcoin did not have money to buy it. If you have money, you can buy bitcoin without thinking about the price, waiting for the price to fall does not imply that you are wiser or smarter than others; no one can predict the price of bitcoin, therefore it is best to buy when you have the money and without thinking about the price.
For me, there is nothing special about waiting for the price to drop because it is a waste of time for me and sometimes it leads to regret at the end if you didn't buy and the price keeps going up. If you have money to buy bitcoin, do not waste time thinking of waiting for the price to drop, you may be waiting for the price to drop and you won't be able to buy at the end, buy with the amount you can afford to buy and hold. Although you can buy when the opportunity come, buy it is not advisable for anyone to wait for the price to fall before buying bitcoin.
The decision to buy more Bitcoin should be based on how many Bitcoins you already have in your wallet rather then price. Those who have sufficient number of Bitcoins can wait for price to go down to buy more Bitcoins but those who don't have sufficient number of Bitcoins must accumulate Bitcoins as much as they can before acquiring the desired number of Bitcoins in their wallets. How much Bitcoin is sufficient for you depends on your finances for some people 1 Bitcoin may be enough while for others may be 10 Bitcoins are good enough.