More volatility means more opportunities to trade.
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Yes, you can still make decent money when trading the volatility of bitcoin, but it is not a safe and recommended approach if compared to DCA. I see day to day trading with high volatility as gambling. But when it comes to DCA its totally different. The risk is less and yes you might be accumulating Bitcoin slowly, but you will surely meet your target. The special benefit of Dcaing in Bitcoin is that if you buy and hold, you are pretty much guaranteed to make lots of money in the long term.