Well they all had their talents, didn't they? Poe specialized in being happy go lucky whenever at all possible. Which wasn't to say he didn't get stressed out or moody sometimes, but he did his best to avoid it when at all possible.
It was pretty easy to smile when most all his favorite people were around, too. That was certainly a thing. "Sorry," he said, smug and too close to do anything but whisper. "Is that a challenge?"