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A strategy is really needed to get maximum results in Bitcoin investment. The DCA strategy is very suitable for beginner investors who are not familiar with fundamental or technical analysis. This strategy is also very commonly used by investors who have been in the Bitcoin market for a long time. One of investors' goals in investing is to minimize risk, the DCA strategy can help investors reduce investment decisions based on emotions and FOMO.
Investors who want to invest in Bitcoin must have the courage to start investing any amount and make it a regular habit. When the convenience and benefits of the DCA strategy are felt, it will certainly attract more interest from investors to continue investing regularly.
The main purpose of DCA is not to minimize the risk of investment, but DCA is used to get a lower average price instead of a lump sum. DCA is always recommended so that you can anticipate a price down after you buy, but you don't need to be too strict about this strategy because basically the price also has the potential to rise higher after you buy. Buying regularly and buying with DCA are different. I mean, regular buying can be done at any price, whereas buying DCA takes advantage of another dip to buy once you see a correction.
I think I will disagree with you on that because DCA has numerous purposes including minimizing of risk in investment, however it seems you are misunderstanding the purpose of lum sum and DCA strategy because from what you said that the main purpose of DCA is to get a lower price of Bitcoin instead of Lum sum, actually that's not how it works because in as much as investing on Bitcoin when the price is low is very profiting but in times of DCA strategy you can get into the market at any price and start accumulating Bitcoin with the little fund you can afford because one of the reason why DCA minimizes risk is that it doesn't require a big certain amount of money before you can start accumulating but however the only fact is that using DCA strategy could take years before getting a good amount of Bitcoin depending your accumulation amount.
But however Lum sum could sometimes work indirectly as the reversal of DCA strategy because before you can Lum sum you will have to be very patient by waiting for the Bitcoin to dipp before you can start Lum sum, so perhaps that's the reason why is mostly advisable that while using Lum sum you should also have separate funds that could help you accumulating usin DCA because with only Lum sum it may likely take time before the dipp could happen.