“Because it already is? A living ecosystem can usually outperform and absolutely outlast any sort of machine fabricated environment. Throw a gas giant at the distant edge of your dwarf system and it’ll sort out nearly all the deadly rocks. Why fix what isn’t broken?”
Aliens: “Wow, such a young species already building a dyson sphere?”
Human: “Huh? Oh, that? No, thats our Galactic Parabolic Orbit Slingshot Array, AKA ye ol’ sun nudger to get earth closer to another usable star.”
Aliens: “…”
Humans: "You ok?’
Aliens: “If you can maintain fragile habitability while you move stars why not just turn your planet into a space station?”
“Because it already is? A living ecosystem can usually outperform and absolutely outlast any sort of machine fabricated environment. Throw a gas giant at the distant edge of your dwarf system and it’ll sort out nearly all the deadly rocks. Why fix what isn’t broken?”