On the other hand, Lump-sum investment can be useful and maybe not. As i aforementioned that we can't time the market. So, what will happen using this strategy for BTCBTC accumulation? The person will buy Bitcoin at higher price or maybe at lower price with full of his investment at the same time. Sometime, he/ she fell prey to FOMO because he/she is waiting to see more dip for his accumulation of Bitcoin. In case, if it do not happen like price will not go more down he/she will miss his/her great opportunity of buying. Why i don't like Lump-sum investment because we have to invest our whole amount at the same time for accumulation of BTCBTC.
Let's not underestimate lump-sum buying too much. Let's not go down the road connoting that DCA is wise, right, recommended, and so on and lump-sum is wrong and all the opposites. Yes, we cannot have perfect timing, but resources are available. You can study and analyze Bitcoin's movements and tendencies perusing all kinds of Bitcoin charts and tools. From there, you can set a price or a price range for your lump-sum purchases.
Take note that lump-sum doesn't necessarily mean one-time purchase.
You can buy right now with most of your money and set aside the remainder in case Bitcoin drops back to $20,000 or below. Or you can divide your money into 3 parts and use 1 part to buy today, keep the other 2 in case Bitcoin drops, but if the price rises instead, use 1 part to buy at $30,000. The other one is reserved for the worst case scenario. This isn't strictly the DCA that everybody is talking about, but I think this is also a good approach.
It is still a DCA.
"You can buy right now with most of your money and set aside the remainder" - means that you just made an initial investment, and you still reserved some money for your next investment in case the price of Bitcoin drops. The fact that an investment was made/planned to be done in a different timeframe, you can't be calling it a lump sum anymore.
We really can't deny that the wisest strategy to accumulate Bitcoin is DCA. By regularly investing, gives the advantage of reducing the effect of volatility during our accumulation of Bitcoin. Also, if ever the price of Bitcoin suddenly drops, you won't be thinking of whether you will buy or not, because you already planned on regularly purchasing Bitcoin.