I will first admit that I am only a casual Star Wars fan, so I do not have much familiarity with which terrains correspond to which planet in their galaxy. That being said, I did notice the phenomena of single-climate planets in earlier films and it made me begin to wonder which condition would occur most naturally: a diversified planet such as our own, or a Star Wars planet model.

I understand that there were plenty of people who were upset with the direction of this film from a character perspective, so I am glad that even if that was the case for you as well, you were still able to find a silver-science-lining :)