People who buy gold are strangely careless, I have workmate who has bought gold with his savings and probably everyone who has spend more than 5 minutes in his presence knows about it.

Aren't Bitcoin (similar mindset) people the same way?

the problem, is physical security.

even if you have the best stash spot for metals, lipping off and flexing, in public about high end stuff is how you get tailed, and raided.