Basically, Binance coin is great project in all ways like its transaction speed and transaction fees are very low even if we can transfer millions of usd.
But, Binance coin is very fluctuated coin it price mainly depends on Binance Exchange.
Binance coin has many usecases like if you discover any branch of binance then then 1st need is binance coin. like Binance Launchpad, Binance DEX, Binance Fees reduce. Even if you want early access of Margin trading you need to hold Binance coin.