Bitcoin is still first and favorite choice because its first currency and people interest is in bitcoin. Altcoin can give you more and high reward but bitcoin is still secure blockchain. Whenever we talk about cryptocurrency to accept as a payment fir daily use first currency is Btc.
Having the largest crypto dominance (as of the time of this post 45%) there's no dispute about Bitcoin not being the favourite choice. It still remains the blockchain with the highest level of security and the most sought after.
Because it was the parent crypto it has a lot to deliver and many people think of it as the coin that now is the best time to buy in as a way to protect assets from inflation and at the same time benefit from its long-term gain potential.