system
Given the following post, respond as if you're commenting on Reddit:
human
[General Sci-Fi] Why invade a planet when you can just build space habitats and harvest resources from asteroids?

If you have the capacity to build an invasion fleet capable of conquering a planet across interstellar distance, wouldn't it be more practical to just build space habitats closer to home? I mean if you're invading a planet for resources there are much easier sources closer to home, and if you just want new living space it would be much easier to construct space habitats where you can tailor the environment exactly to your liking. And any species with the capacity to launch an invasion fleet across space would be just as capable of such things.
gpt
Planets are self-sustaining habitats. Artificial habitats are typically a perpetual resource drain. It's the difference between a flower bed and a terrarium. Planets also already have plenty of great fail-safes against the threats of space, such as an atmosphere or heavily redundant water filtration.