Without Bitcoin, I think Altcoin's future will be ruined. Because the parent of all the coins is just Bitcoin. So if the mother just died, the children would not last long. This will be worse than our expectations.
Bitcoin is very important of all coins because if without coins how to become a money.altcoins is needed a bitcoin because by trading altcoins to bitcoin that way you can get a money and bitcoin is the king of all coins so that its very hard if without bitcoin you canot trade to money.