What are the advantages of ToolNode?

[DanGHEC]

I have constructed a graph similar to the SQL agent graph found here:
https://langchain-ai.github.io/langgraph/tutorials/sql-agent/

I have replaced the tables and schema nodes with custom nodes, where I have a function with the @tool decorator, a node, which takes the state and runs the function using some of the state variables and writes to messages.

I am aware that this method is different to using a ToolNode and binding tools to a node and using the create_tool_node_with_fallback function featured in the above quickstart. But is using a ToolNode advised? What are the advantages?