RickJB writes:
...but the concept of life spreading around the cosmos by means of the stellar lifecycle hardly strikes me as "Goddidit".
I might agree with Jar on this one. "Goddidit" is an answer of ignorance and brings inquiry to a halt, and so does Panspermia if proposed for the same reasons. In reality there is much we can study about the panspermia possibility, but when it is proposed out of ignorance then it becomes very similar to a standard Creationist argument, "We can't figure out how it happened, so [insert your favorite alternative here: Goddidit, panspermia, etc.]"
--Percy