Is Ethereum backed by anything?

Excuse me, could you please clarify something about Ethereum? I've heard some people mention that it's not like traditional currencies which are backed by a central bank or a physical commodity like gold. So, I'm wondering, is Ethereum backed by anything at all? I understand that it's a decentralized blockchain platform, but I'm curious about the underlying value or security that supports its existence and trading. Could you elaborate on this, please?