Historically, bitcoin is promising, leading the market, and the first decentralized cryptocurrency that was created in 2009 by Satoshi Nakamoto.
Yes, it is better than other cryptocurrencies but it doesn't mean perfect. The born of other cryptos is to fit in the missing point of bitcoin.
Bitcoin and cryptos are related to each other in the essence of services, connection, convenience, offering fast reliable transactions, and other basic daily transactions of human.
This thing happen for innovation purpose.