system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Given tbe proliferationn of repulsorlift technology even on simple things, why have any wheeled or legged vehicles at all?
gpt
Repulsorlifts require a lot more power, are more problematic to repair if they suffer faults in the field, and make the vehicles immobile (and even unstable) if they fail. Wheels, on the other hand, are pretty easy to repair (even we can do that pretty quickly) and *don't* leave the vehicle as deadweight if the power is cut. With a decent Force-user or two (or a few strong individuals), you can push a wheeled vehicle to a suitable repair location. 

Legged vehicles can be quite good at climbing over some obstacles and terrains that wheels and repulsorlifts struggle with. In addition, legged vehicles tend to demoralise foes more than those with wheels or repulsorlifts. Would the AT-ATs be as daunting with wheels? Or if the central body just floated? If anything they'd look more ridiculous, although they could move faster.