system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] I'm looking at my hometown spaceport here, and it struck me that most freighters are really small. Why?

- And its not just the obvious smuggling ships, everything here is just a few tons of cargo capacity. It costs a lot of credits to transport stuff off world! 

 Could I clean up if I got a hold of a war surplus star destroyer and crew it with droids? The cost per ton has to be a lot cheaper, and all my goods would not have wookie fur all over it after delivery. Am I missing something?
gpt
You're only seeing the ones that can actually dock at a spaceport. The biggest ones don't actually need to land, they can just have cargo brought to them in space with smaller cargo shuttles.

You're not going to see many Star Destroyers at a land military base, but it would be wrong to assume that only light attack and transport craft are in the Imperial Military.