So how are space colonies created and who cleans up all the debris when they get destroyed.

How do you think space colonies are created. It would be really hard to build the pieces where there is not gravity. So I'm thinking the build all the pieces on earth and send them out into space using ships. Afterwards they just assemble the pieces until it is slightly operational where they have some sort of gravitational field and work from their. That's what i'm assuming.

Then there is the deal with all that debris after combat. Do you think they scavenge the wrecks for parts and reuse them. There is also the possibility that they just leave them there floating around.