system
Given the following post, respond as if you're commenting on Reddit:
human
[titan a.e.] why don't they just find a pre-existing planet?

So Earth got blown up and humanity is homeless. Do they really have to drift in space? Are all the planets taken?
gpt
Couple of reasons.

1- After the Earth blew up there wasn't any central human government left. The surviving humans didn't have the leadership or resources to band together and find a new planet.

2- The Drej declared war on all humanity. Their intentions were to wipe out all of humanity and destroying the Earth was just the first major step. Over the last 15 years they had been going around destroying the few remaining human drifter colonies.