You store it in a safe. Unless you are a multi-billionaire your bricks of gold stack will easily fit. You won't have to pay annual member fees, fees based on your deposit amount, or inspection fees. You certainly have more trust in them than I. All of those people defrauded sounds just like your story. They were all so reassured their gold was in good hands. So you've been there to see your gold, unannounced. Or do they need to a day or two to "prepare" for your visit.
I guess this is a case of you do you and I'll do me. I haven't heard any of the horror stories that you mentioned. If things like that were happening frequently and people were somehow getting swindled, the word would get out quickly, lots of people would start raising hell, and that depository would quickly go out of business and would need to lawyer up to prepare to explain in court after all the lawsuits they would face. But the bottom line is, they would be out of business really quick.
Yeah, if a person wants to store at home, a safe would be mandatory. But no matter how large the safe in your house, it would be nowhere in the same universe of security as the large professional vault doors in a depository, like banks have but bigger and better.
But lemme' ask you. Let's say you have a lot of gold/silver stashed in your house in your safe. And let's say that the word somehow gets out that you're stashing all this at home. No matter how tight lipped you are, word seems to always find a way to get to people that you definitely don't want to know. For instance, I heard a story where a guy who worked for a safe company got arrested. He was the guy who delivered and set up the safes for the customers. The customer may not have ever told anyone he had a safe, but the guy who delivered and set up the safe knew. And he got arrested because he was selling this information to some nefarious people, so they knew who had safes in their home, along with their address. Talk about a horror story.
So, you're sitting in your home, watching TV, and a crew of several guys comes crashing through your front door with weapons ready. They grab you, or your wife, or your kids, or whoever is in the house, and tell you that if you don't open up your safe in the next 60 seconds, it's gonna get ugly. So, what do you do? After you have your "Code Brown", I bet you cough up the combination to your safe, and in just moments, whatever you held in that safe is no longer yours. Hopefully, they'll let you keep your life, but your gold & silver would be gone in a flash. Gold & Silver are magnets for people with very bad intent.
So, by all means, keep your gold/silver in your home safe. And I'll keep mine at a private Fort Knox loaded with security cameras, armed guards, and all sorts of other security measures that we're not even aware of.