Your path is similar to mine. It also almost identical to my religious path too. Essentially I was born into something, told I was supposed to respect and obey it (without a reason for why), and realized there are so many competing groups saying they're also the best/correct, but that can only be true for one of them. This means most people have to be wrong, if not everyone.

I was also in boy scouts and am an eagle scout. One of the requirements for that is the belief in a god of some kind (usually the Christian one, but not strictly required), and it has tons of nationalism involved. I still finished with the rank of eagle, but it's fair to say I was faking a lot of stuff by the end of it. (Tangent: I really like the idea of scouting, but it really needs to get rid of this stuff. There are alternatives, but none are as good.)