What's important is 'dorminance' among the cryptocurrencies and Bitcoin has been the most dominating among digital currency. Also, the global well known digital currency is Bitcoin and not ethereum. In terms of coins circulation supply, the most circulated among the two cryptocurrency is ethereum while Bitcoin is the list in supply, so, Bitcoin will be more valuable than the second.
Really. When people come to the crypto market, they ask first of all how to buy bitcoin and not how to buy ethereum. In addition, bitcoin did not fall in price more than 15 times from its peak price. Perhaps that's why bitcoin gets more trust and attention from both large investors and ordinary people.