Nebula, while being a rather direct and literal person, was not unaware of sarcasm. The time spent traveling with Quill and Rocket had done the job of introducing her to the term, and she was well able to recognize it. Sometimes he made her want to shoot someone, but at this time it just made her have to hide a tiny smile.
"Yes. Being otherwise is a good way to be killed." She stared at him, daring him to disagree, before leading the way out into the city. There were signs of various fights all around them. Scorched earth, shattered windows, felled trees, signs of fires that had burned out. The city wasn't quite destroyed, not quite yet, but the fighting had certainly taken a toll.
She glanced over at him, a small smirk on her face. "I don't think we will have to look very hard. The villains just keep popping up out of nowhere wherever you go. We can just pick a direction and start walking, sooner or later there will be someone or something to fight." She looked around, listened for a moment, and then started walking northwest into the park, towards the sounds of distant screams of rage. Possibly two or more villains were fighting each other, which was always amusing to watch.