Your wife has not mentioned lately anything about raising your life insurance. Maybe you forgot her birthday!!!
Up here in the rust belt in Wisconsin, it is very common for the hard brake lines to rust and then break on any vehicle over 10 years and maybe sooner. Seems to me the leaks are almost always at a point where the line is held to the frame rail by some method.
I currently am working on a 2001 F150 that blew a line. Lucky for the owner he was right at the property where my shop was. We just nursed the truck into the shop. All I had time to do was to cut off the line and remove the section from a point near where the firewall meets the floor pan to the rear flex line fitting. You could snap that old line easily anywhere it was badly rusted.
I always replace these with teflon coated lines.
I have also seen newer lines that had been snapped in two by road debris. So I wouldn’t worry too much about someone maliciously cutting a brake line.
Yosemite