And some queries are just not acceptable on SO, but fine for ChatGPT.
For example I might wish to ask, "Give me the framework for a basic API written in Python that uses API key authentication. Populate it with several sample methods that return data structures in json."
If I ask that on SO, I'll be down voted and locked before I know it. I may also get some disparaging comments telling me to do my research, etc.
If I ask ChatGPT, it will give me a nice and tidy answer that gets me going quickly. It will explain things too, and allow me to ask follow up questions and take my requests for refinements. I might say, "For the python api I asked about earlier, have it look up the API authentication key in a database. If the key is in the database, it is valid." - and bam - it does it.
Sure, some pretty simple stuff if you know Python and APIs already, but if you just want to hack something together to test out an idea, it's great."
In the end, SO is a query with responses (maybe). ChatGPT is a conversation that can go beyond just the initial query.