First, if I did carry a firearm, you would never see me posting anything about it online. Call it paranoia, but I don't think it's anyone's business whether or not I carry. I certainly am not a licensed carry holder, mainly because a license to carry is defacto registration and I don't care to be registered.
While there is a wisdom in not advertising the carrying of a firearm, I cannot fully support the rest of your statement. While I don't necessarily agree with the need for a CCW (in my opinion the 2nd Amendment is your CCW/Open carry permit) it is the law in most carry states. And 'they' are going to know whether you have a firearm(s) or not regardless of whether you have applied/received a CCW simply based upon your purchases which can be tracked. In other words, people that buy ammo or components are likely to have a firearm. Unless you make all of your purchases under the radar i.e. pay cash.
Not having a CCW (assuming it is required in the state of residence) and not carrying a firearm is defacto resigning yourself to being a victim-in-waiting.
Third, I believe that carrying firearms changes the dynamics of any self-defense situation. Now, you must not only defend yourself, you must defend your weapon; by which I mean you must keep it from being taken from you
True, it is a possibility the firearm can be taken from you. But as Kirk mentions, it is statistically remote. Police officers carry plainly in the open for all to see, and though police have been disarmed, it is a very remote occurrence. A citizen carrying concealed has even less of a chance of being disarmed because potential bad guys can't take what they have not seen.
If you draw or otherwise brandish it, any self-defense situation has now become a deadly force situation.
Incorrect. The situation is already a deadly force situation which is why the firearm has to be drawn.
If you do that, you must a) be certain that you're legally permitted to do so, or you're going to become a bad man's boyfriend in prison, and b) you must be capable of taking a human life, because you just raised the chances considerably that you'll have to do so.
Most states require training in order to be able to apply for a permit, in fact every state does that I'm aware of (that issue CCW). This includes training on state statute. Statistically speaking, and as I pointed out above, a private citizen is five times LESS likely to make a mistake than a police officer when it comes to drawing/using a firearm according to the study I presented.
True, you have to have made the decision to use the firearm but it doesn't increase the chance you'll have to kill some one. Again, as Kirk points out, there have been MANY instances where the presence of a firearm in the hands of a good guy has stopped the bad guy from doing bad things without a shot being fired. It isn't something to count on of course, but it does happen with some regularity. On the flip side, not having or not using a firearm makes it more likely that your safety is in the hands of the bad guy.
Fourth, just like martial arts, carrying a weapon is worse than useless if you are not highly skilled and continue training with it
Again this is incorrect. While being highly trained is vastly preferable to being untrained or lightly trained, there have been a plethora of real world situations where the citizen has successfully defended themselves with little or no training. To say it is 'worse than useless' is ridiculous. What is worse than useless is having no means of protection.
While I'm a vocal spokesman of buying a firearm and getting REALISTIC training (strong and support hand shooting, loading, clearing, charging, shooting from various positions, dim light shooting, simunitions etc) for some it isn't as possible as others. As with anything, you do the very best you can with what you have and what is available.
I also think that most preppers or survivalists or self-defense experts and so on never seem to consider the self-defense scenarios they are MOST LIKELY to find themselves in. That is, we are far less likely to experience a nuclear detonation than we are a hurricane, tornado, earthquake, fire, mudslide, flood, or other force majeure.
I think you have a TV/Doomsday Preppers view of people in that category. And while there are loons within that community, they are the exception rather than the rule. They just get the press from an uneducated media. The VAST majority of people I know and associate with in the emergency preparedness/self reliance community are focused on the realities of the world we live in i.e. natural and man-made disasters that require critical thinking and pre-planning. Priorities are having safe, clean drinking water and the knowledge of how to make it clean and safe. Having food to eat. Having realistic and necessary medical skills and supplies for individual needs. And while firearms are on the list, for the majority of likely events they are way down at the bottom.
One should be careful about making sweeping statements about 'preppers' Being a 'prepper' is how most of our grandparents lived their lives. Back then it was SOP and just smart. Nowadays by most surveys/stats, less than 10% of Americans are prepared for a disaster (be it a storm, mudslide, forest fire, earthquake, social unrest, contaminated water supply, overturned chemical tanker on the highway, martians landing or zombies). Let me repeat that because it sounds kinda important...less than 10% of Americans are prepared for a disaster in their community. I kid about the space aliens and zombies but most people will freak if the water/power goes out for a week. Something like that should be a mild hiccup and not a world changing event in your life.
This is an area of expertise for me as I own a board, mod another and am a senior member of a third within this community. Good people, most of whom have a solid game plan.
I've offered factual statistics above for consideration.