In looking at the #marvel #civilwar movie coming out next year, it's important to remember one thing: this is not about Iron Man vs Captain America (although Cap would definitely win). This is about freedom vs security. How much freedom are we willing to give up?
By registering with the government, the heroes are basically giving up their privacy. I'm not sure I'd trust an Orwellian "Big Brother" state watching my every move. I can watch out for myself.