$BTC Many new traders think that trading or holding BTC yields little profit, but in my opinion, this is not the case. BTC is the least volatile among all coins, so it is the safest for capital preservation. Moreover, it does fluctuate, but over the medium to long term, it always goes up. Many altcoins have dropped 5-10 times and have plummeted, causing significant losses for holders. There are also some altcoins that increase several times from their listing price, but these are rare exceptions, not everyone can choose them. Therefore, it's best to trade foundational coins.