What do you think would happen to the rest of the currencies if for some reason bitcoin were to crash and the price dropped to 0?
BTC, I guess is the superstar of all the cryptocurrencies and it's valuation governs the valuation and future of other cryptocurrencies. It is because of bitcoin, the people are trusting in other cryptocurrencies too and if bitcoin collapses, though it is next to impossible but if worst thing happens and it crashes and other cryptocurrency will also not survive and they will collapse too.