based on what I heard that Bitcoin is not the first cryptocurrency, but Bitcoin is the first cryptocurrency that really makes the world excited, In conclusion, even though Bitcoin doesn't exist, I believe the current position of Bitcoin will still be filled by other Altcoins, and the future of cryptocurrencies will remain good and keep going.
we don't know what will happen to the altcoin when bitcoin doesn't exist. moreover bitcoin, and ETH is the pole of altcoin. in fact, the price decline that occurred at the ETH today really made a big change in the altcoins that were already on the market.