Firstly, it was the first cryptocurrency that was ever created, and it has been around for over a decade.
Secondly, Bitcoin has the largest market capitalization among all cryptocurrencies, which means that it has a greater level of liquidity and is more widely available for trading and investment.
Thirdly, Bitcoin has a brand name recognition that other cryptocurrencies do not have.
Finally, Bitcoin has a limited supply, which gives it a scarcity value, and this has made it a popular choice for investors looking for a store of value.