That's nothing, not only have I never paid for ChatGPT, I've never even paid a moment of my attention to Chat GPT. It's a chat bot, right? ..web search.. yep, a crappy ad-laden chat bot.
You should not feel guilty at all. These tools belong to the people, and should be fully free. It was after all, the hard work of people’s lives that was stolen and used without permission for training.