I use Claude for a few reasons.
1) I don't want to give OpenAI my money. I don't like how they are spending so much money to shape politics to benefit them. That seems to fly in the face of this being a public benefit. If you have to spend money like that because you're afraid of what the public will do, what does that say?
2) I like how Claude just gives me straight text on one side, examples on the other, and nothing else. ChatGPT and Gemini tend to go overboard with tables, lists, emojis, etc. I can't stand it.
3) A lot of technical online conversation seems to have been hollowed out in recent years. The amount of people making blog posts explaining how to use something new has basically tanked.