Even during the bear market, the best strategy to accumulate Bitcoin is using the DCA (Dollar-Cost Averaging) method. This is because, even in a bear market, the price of Bitcoin continues to increase and decrease. If someone decides to buy Bitcoin all at once because they see the price as low, it is and go futher to usees the money he did not supposed to use to buy bitcoin like it emergency funds is still possible for Bitcoin to drop even lower than the price at which they bought it. This could lead to panic, causing the person to sell and then try to wait for another dip.However, by using the DCA method buying weekly or monthly the investor accumulates Bitcoin at different price points. Anyone trying to "outsmart" the market might end up selling their Bitcoin prematurely.
It is also unwise to use emergency funds to buy Bitcoin simply because the price appears to have dipped. You can never be certain where the dip will stop before the price starts increasing again. Emergency funds should be reserved for actual emergencies since you never know when one might arise. If someone uses their emergency funds to buy Bitcoin and an unexpected problem occurs the following week especially if the price of Bitcoin drops further they could find themselves in financial trouble.
Yes, the idea of buying Bitcoin all at once is because the person wants to play wise with the market, and they believe that the price has dropped, they can take advantage of the chance to buy Bitcoin all at once, which will provide them with a big return when the price increase. Trying to deceive the market, the individual may be considered a gambler since nobody can tell if the price will fall below what they buy with all of their money because we can never predict the price of Bitcoin.
However, even though you have billions of money to spend all at once and whether you are rich or poor, the best option for investing in Bitcoin is to use the DCA method, which involves buying weekly or monthly, as you said. It is a bad idea to put all we have at once in the hopes that it would change our lives, this is very dangerous since we will have nothing left to use for other problems.
This is wrong and I also believe that with the level of knowledge shared here people shouldn't be saying this kind of thing, that DCA strategy is a good strategy doesn't make other strategies inefficient or irrelevant if when use in the proper manner, one can decide to use DCA, lump sum and even buy the dip, going all at once doesn't mean that the person will not make provisions for emergency funds, reserve and float cash because it is bad to invest all our money without making provisions for other important budgets, every strategy to be use should suit the investor investor risk tolerance, financial circumstances and investment objectives.