I used to be a big-time gun owner. I had an AK, a shotgun, a .357, a CZ 52, a .22 rifle, a Lorcin .380 (cheap trash pistol), and a few others I don't recall all. So believe me when I say that I can feel the need to protect oneself as aggressively as possible. It's just that I came to a point where I believe God spoke to me (or my inner mind), and said "who's better to trust, God or guns." I looked at everything I had and realized that it was more than I could ever wield. I gave them up, but I trust God to either keep me safe or take me home. Having said that, I do not have a wife nor children. Perhaps I would think differently then. I can see shooting through a wall with a 30.06 or even a .50 caliber sniper rifle. It's just that it breaks my heart to see people shooting into a crowd or school with so many rounds on tap. That's more of the danger to me than the caliber.
So I don't picket or sight petitions to ban certain weapons. I just try to ask people "do you really need all of those bullets in one magazine?" If someone does have their reasons I can respect that but I' aiming to suggest that there is another way to protect one's land or home.
EDIT: Also, one of the dangers I think of is that I'm pretty sure the cartels mostly go through arms dealers but the street gangs I've read get the majority of their weapons from burglaries and robberies. It just makes me nervous the power that is given to someone to kill so many so fast. My personal logic tells me that if someone has to reload eve 6-9 shote, more people will have a chance to get away. It's not that law-abiding citizens can't be trusted but I think of people's carelessness in storing them and allowing them to get in the hands of people who wish to do harm