system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How is the AT-AT remotely practical?

Low angle of fire, vulnerable to attack on all sides but the front, takes forever to turn, doesn't seem practical on any terrain not fairly flat and stable, and not fast enough to be much of a transport either.
gpt
It's a walking, near-invincible artillery piece packing enough weaponry and troops to level a city. It's designed for Tarkin doctrine. The effect is partly psychological. The Empire's main enemy consists of poorly trained and equipped guerillas. A giant behemoth that's practically immune to most weapons is a terrifying prospect. Nobody wants to fight that. Especially poorly trained and poorly equipped rebels. 

They not designed to work alone either, they're always accompanied by a swathe of ground troops and AT-STs to protect the flanks. 

Its height gives it a much greater range than conventional tanks, it doesn't need to look down because it'd never be deployed that close to enemies.