Which version are you using? Because GPT-4 is, objectively, a major leap over 3.5.
Personally I've found it to be incredibly useful. It's helping me to build an entire new website from scratch, generating vast volumes of code in jQuery, PHP, and SQL, most of which I don't even fully understand, and would probably have taken at least 3-5 years to learn before. It even checks for sanitisation/security issues. This new website, if all goes according to plan, could provide me with enough income to work on it (plus FT/PT) full-time.
And then there's all the useful info and creative ideas I've gathered from ChatGPT without needing to Google stuff. No need to hunt around endlessly on the Internet when it can just provide the answers in a concise and insightful format within seconds. It doesn't get it right 100% of the time, of course, and I occasionally have to double check, but it's right enough of the time to be an objective improvement for my work/research and can be a huge timesaver when used correctly.
Maybe you just aren't entering the right prompts?
I would strongly encourage you to read this thread, by the way.