system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Why are all stormtroopers humans, or races close to humans?

I know that we don’t see stormtroopers faces other than Finn so we have no guarantee of this, but given their height and build it’s a pretty good guess. It seems like there’s a lot of other species that would be excellent candidates for warriors.

I’m sure some of them wouldn’t join the empire because of what the empire has done to their planet and people, but there would have to be some outlying people who just want to go kill things.

Can you imagine going up against a squad of armored Wookie stormtroopers?

Fuck that...
gpt
The Empire had a very strong bias against non-human intelligent species. It would take an individual of a different species with exceptional competence and loyalty to the Empire (see Grand Admiral Thrawn) for the Empire to even consider allowing them to join the military.