How do you feel about BYOAK LLM Apps?

I'm building an App that uses ChatGPT and I'm leaning towards making it BYOAK (bring your own API key) at least at first. I would not actually store the OpenAI API key on the backend and all API calls would be made on the frontend. The positives are that I would no longer need it to be subscription-based and the user only has to pay for what they use. The negatives seem like users may be concerned about the security of their key and also of course they would need to go through the trouble of obtaining an OpenAI API key. So I'm curious, would you use a BYOAK app?