For me Bitcoin has been my 100% portfolio and up to this point, I am glad that I choose that part even though Bitcoin price has undergone a lot of changes lately, my BTC vs $ balance has shown green and also red-negative movements which is a pointer to the activeness of bitcoin volatilities.
Talking about bitcoin volatility can sometimes be very unpredictable and a 100% portfolio of dibitcoin assets is much better than trying to get the top altcoins to hold onto. But not everyone thinks the same and most will try to put a few percent on the top altcoins and in a bull market they will benefit according to each person's investment pattern.
Because the top altcoins can also make profits when people can take advantage of conditions, regardless whether altcoins follow the bitcoin trend or not because in essence trades are made only for profit and even though they don't ignore risks.
Knowing that Bitcoin is volatile in DCA pricing and also having a balanced market that shows not too much of a sign, e.g. 50% price movement within a few hours which is a sign of pump, or a drop in price significantly below 50% which is a sign of dumped.
People who have much smaller capital still have great confidence in DCA, even though the level of price and market stability is not balanced, but if the investment pattern is long-term and our capital is much less then this is the only opportunity we have. It is this price volatility that can sometimes lead someone to take advantage of much larger purchases, when prices can show a 50% or more drop, regardless of how much capital they have to enter the buying market.