Eh, I guess it's a question of "do I need this in my life"? I didn't try to understand the differences before starting to consider moving to Ireland.
I couldn't recite all states of the US if my life depended on it. I am not even entirely sure how many there are, just that there are at least 50 (I think). I can somewhat point out where Texas, California, and Florida are, but New England? Is that even a state?
Geography is something you know when you need it, or when you're interested in it.