You Have even more options: of you have people you trust you can distribute parts of the key to them (for example using shamir secret sharing). It's questionable whether you'd want this. In case of torture maybe you want to be able to give then access. But it is possible to protect your holdings even against that, albeit not without introducing some other risks.
In SF books people often have automatic self-euthanasia options build in that can be triggered mentally. If this ever becomes available I will have it installed. "Let me go now, or I'll euthanize myself and you'll never have anything!"