Likely. You can't build long-chain molecules with just hydrogen, helium, and oxygen, the only three elements more abundant in the universe than carbon. There are other elements that in principle can be used in long-chain molecules, but they're all substantially rarer in the universe than carbon.

ehhh this will resolve when/if we discover carbon-based life, but I'm sure we'll encounter other forms first and not realize it

@Stralor This!