Sugar used to be really expensive so people used carrots instead. That’s how carrot cake came to be. Someone couldn’t afford sugar, so they put carrots into their cake. Seems counter-intuitive now, but back then it was perfectly logical.
Turns out that carrot cake is one of the unhealthiest cakes you could eat, even though it’s full of carrots. With all the oil, butter, cream cheese, and sugar (yeah.. this is a modern recipe), it’s pretty bad for you. It’s really tasty, but really unhealthy. It’s a once in a decade type of treat.