I think statistics is hard. In my country, it is taught to freshmen and it uses the Central Limit Theorem all the time. That theorem is deep and hard to prove

I think statistics is hard. In my country, it is taught to freshmen and it uses the Central Limit Theorem all the time. That theorem is deep and hard to prove so student are forced to take it at face value. Other math courses do not work like that. This is done precisely because statistics is so useful.