Why do you think Gregor changed in to an insect in The Metamorphosis?

Concerning
Gregor's waking up an insect in
Kafka's , I'm afraid there's no answer to
your
question.  The story is ambiguous concerning this point.  There is no
explanation
whatsoever about why the transformation occurs.  Any explanation
for his transformation is
speculation only.

Of course,
the omission is purposeful.  If the narrator
reveals why the transformation
occurs, the focus is shifted to the cause, and, apparently, that
isn't
Kafka's purpose.  The story isn't about what Gregor did to deserve this, or

what...