For the vast majority of people, this isn't going to be a reality. This is; either you live in a part of the world which is notorious for this sort of crime or you're a rather high profile person. This sort of stuff doesn't really happen in a lot of people's realities. Usually, when this sort of stuff happens it's more related to drugs than how much money you hold, otherwise you'd just see these types of people going to rich neighbours, and doing this all the time.

Despite, criminals being criminals; they aren't risk inverse. They're much more likely to attack, and try to get a large holding of fiat money, since they can find that physically within the property, instead of interrogating you for your Bitcoin which is much easier to conceal, and isn't guaranteed you own much either unless you've tied it to your real world identity.

I just feel for most users here, this sort of situation is just so incredibly unlikely, that it's not worth worrying about too much. Instead, protect against not revealing you have Bitcoin to the public, and only to those that need to know. Family, tax man, potentially some friends depending on what situation your in.