It's probably a good thing that humanity hasn't found any other sentient life in the universe, if many sci-fi comics are anything to go by. There's always an intergalactic war going on, and the humans are usually the jerks. For example, let's take Terra: Earth is determined to win, no matter how many settlements, innocents, and resistance members it hurts along the way. The people (and aliens) trapped in this war each have stories, damaged pasts, and live in a certain amount of danger. Despite their attempts to live a relatively normal existence, they are not safe, and they have much work to do.

Read Terra!