For first drafts, I always write it by hand first, then later I'll ask AI for some feedback and thoughts. I find that the AI training data is based on really boring structured writing where it has to be

1. Introduction

2. Transition sentences

3. Middle paragraphs

4. Clean conclusions

which I find doesn't vibe with my style of writing where I tend to meander quite a bit then try to wrap things up back in a different manner