You would be foolish to assume that "stand your ground" laws will protect you from being killed for this type of money. If someone shows up on your doorstep of course you could shoot them before they get a chance to do anything. You are safe in your home (unless of course someone is willing to take a chance and bring more guns and more people than you have access to) but I am assuming you do leave your home sometimes.
You could die as a result of this investment scheme.
Not this shit again.

What, you think that it couldn't happen?
I had thousands of dollars in your fund. I have a friend who had 10's of thousands of dollars in your fund.
You think no one has ever been killed for that type of money?
I don't think it's particularly likely, I don't condone it, but it is a possibility. This is a country where almost anyone can go and buy a gun. A bullet in the head could extinguish Sam's life. Forever.