Why I run a Bitcoin Node: To provide Bitcoin Sybil Resistance

Because the bitcoin protocol considers the true chain to be the one with the most cumulative proof of work (not the longest chain as is often incorrectly stated,) the result is that a new peer joining the network only needs to connect to a single honest peer in order to find the true chain.

This is also known as “Sybil resistance,” which means that it’s not possible for someone to launch an attack against a node by creating many dishonest peers that feed it false information.

It only takes one true node to debunk any attack big or small, we all (plebs) have this power.