I'm not arguing that imagination is undirected or unintelligent. Your reply misses my point.
If you say something needs God, angels, or aliens to happen, I shouldn't be able to imagine a scenario in which it happens without same.
You can imagine pigs flying all you like. That is not science though, it is not reality either. You can live in a world made up of your own fictions if you like, but most of us would rather live and function in the real world.
We can imagine a lot of things, some clearly impossible, some plausible.