There is nothing wrong about being proud of stuff.
I mean if it's something that you earned for yourself.
You can't really be proud of being intelligent, or beautiful, or born in a rich family, because those are things that came to you as a gift from good luck.
You can't even be proud of your nation, much like you cannot be proud of ironman or captain america, not because you didn't earn them, but because they are things that don't exist in reality.