There might be some that actually believe the patriotic stance, but for the ones I've met it's not about using them to fight the corrupt government (otherwise USA's democracy wouldn't be in the state it is right now); it's about the fantasies that they could dominate any violent conflict through overwhelming skill and firepower. They seem to think that having firearms puts them in the safe side of survival of the fittest.
I have to agree that weapons are very interesting from an engineering point of view, as any complex machine, you can appreciate the engineering and ingenuity... although thinking about their main purpose is a huge turn down. By all means let's keep making weapons, let's use them if needed, but let's not fall in love with them.