Why to create a full node?

Here are some of the benefits to have your own ethereum full node

1. You’re solo mining or running a mining pool, if this is the case then you need a node in order to talk to the network.
2. You want to make sure your transactions to the network yourself. Remote nodes are generally reliable but are controlled by 3rd parties and typically throttle heavy usage.
3. You want to help secure the network; the more independent nodes running the more copies there are of the blockchain and the more resilient it is.
4. You want to make the network faster and secure; the more nodes the lower the latency in sharing blocks and the more copies of the blockchain that exist.