"But am I the only one who doesn't think that a religion is an excuse for a nation?"

I don't know the answer to this because I'm not sure what the question is.

Is the question about whether or not religion is a good reason to create a nation?

Or is it asking whether a nations actions can be excused by its religious beliefs?

This is a very ambiguous and potentially very contentious issue.

If I was going to give an answer I'd need a more specific question.