We certainly don't need a membership card to be nudists, but it would be nice if we had someone to lobby for us.
We do have organizations that lobby for us, both AANR and TNS lobby in addition to their other services. And guess what? They also issue membership cards.
While the purposes for gun ownership that you mentioned are valid, they were not what inspired the 2nd Amendment. King George's tyranical reign showed the founding fathers that the populace needed arms to protect itself from that tyrrany. Today's version of King George is the Left with names like Soros, Schummer, Clinton, Waters, & Obama.
This has been echoed elsewhere but like most everything else I do that's classified out of the "mainstream" you generally don't bring it up in casual conversation.Even within the Church its a touchy subject. I generally don't wear what I enjoy or what I believe in or do on my proverbial sleeve. That's not how I roll. I'm actually dropping my membership in many things I used to support mainly because my money can be better used elsewhere. :)