It makes sense intuitively; starches are too metabolically useful and too prevalent for us to not have a way of sensing them in our food.
I've always wondered about hot/spicy foods, though. Why on earth do we enjoy eating that? What the heck possessed the first idiot caveman to ever try a hot pepper and then decide that he wanted more? Did some proto-bro decide to prank his buddy with a hot pepper, followed that prank-ee deciding that he was going to show that he actually liked it just to mess with the prank-er?
"I've always thought pastrami was the most sensuous of the salted cured meats."