You're right that Bitcoin is the worthiest cryptocurrency and most trusted one among the others. The limited amount or total supply of the BTC is good because it is one of the factors that can make this coin bullrun someday. But, if the volume is limited, it seems that the cycle of this coin on the market is dropping.
Can it drive into under $3k? I don't think so and hopefully not so. This time, the price hits $3,878.52 and I hope that it will be higher again.