It is not an important question why the BNB price is rising, But the answer is very simple investors have trusted the BNB because its a product of the worlds largest crypto exchange and also dont underestimate the potential of the Binance Smart Chain which is also using BNB as fees because if the trend will continue It will be surpassed the Ethereum Network in terms of volume and for me, it's far better than paying a $30 while sending or trading in Ethereum.