It's very strange to vibe code a project and feel both a lack of emotional investment but also the cognitive overhead of steering an AI.
The process of iteration, or the feedback loop, typically allows space to try things out and experiment and then either drop an idea or refine it more purposefully. And those breaks in between the pure delivery to focus on that gives you room to breathe and also see the progress of your work.
Blatting it out in 6 hours with Fable 5 skips all of that and you have something like an MVP, but you haven't really put anything of yourself into it. So why bother committing unless you can take that further or apply something novel or reflect your own personality in it? Or you genuinely believe you're on to something and the AI approach actually gave you a path to building it?
I've been 'vibe coding' something, I've spent about a month on it on and off along with a fair bit of debugging on some sticky issues. I still think I'd suffer going into that codebase and doing stuff in it by hand, no matter how well I thought I organised it all.