Why do people in the US say or but never

You're right! People in the US don't say "or but." It's grammatically incorrect.

Here's why:

* "Or" and "but" are conjunctions with different meanings:

* "Or" indicates a choice between two options.

* "But" indicates a contrast or exception.

* They can't be used together: They create a contradiction because they represent opposing concepts.

Instead of "or but," we use:

* "Or" alone: "You can have the apple or the orange."

* "But" alone: "I wanted to go to the park, but it was raining."

It's possible you're thinking of a situation where someone might say "or" in a way that sounds similar to "or but." For example:

* "I'm going to the store, or I might just stay home." In this case, "or" is used to express a possibility, but it's not actually combined with "but."

Let me know if you have any other questions!