What do you think about men who do not take off their baseball caps in restaurants?

I'm talking about men 25-55 y.o. and in sports bars to semi-nice, not formal places. Like sit down, get waited on restaurants, like a Red Lobster?

Do you think that is rude? Does it make a difference if you are in a sports bar in a group & all the men do but 1?
Updates
+1 y
I don't care anymore, you mean people.
Updates
+1 y
To confused: I see your pt.

To expos: thanks
What do you think about men who do not take off their baseball caps in restaurants?
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