Definition
This idiom is used to express that people have different tastes or preferences, and it's often impossible to explain why; especially when someone likes something that you dislike.
Some people like to put pineapple on pizza, there's no accounting for taste.
He actually likes to wear those flashy clothes, there's no accounting for taste.
Though I dislike it, she claims that this brand's coffee is the best she has ever tasted; well, there's no accounting for taste.