Has a non-game playing friend or family member of yours ever examined you holding and manipulating a console controller, and concluded it to be as alien to them as piloting an aircraft?
For as nonsensical as their design might seem to be to an outside viewer there are very intentional and important choices to be made when console developers design their controller, consider these questions about how controllers are designed, and respond with your own insight on the subject.
What sort of challenges would the people designing a controller have to take into account? How would they have decided how many buttons there are, what shape/color these buttons are, and where on the controller they are?
Over the years, how have different controllers from the same company changed? Notice how, functionally, modern controllers for different consoles are almost identical, why do you think this is?