The last three options you mentioned are all things that happen over relatively slow timescales, if your goal is to completely destroy humanity. The single exception to this is nuclear war, but if you’re correct, then we can reduce the problem to non-proliferation, which is at least in theory solvable.
The last three options you mentioned are all things that happen over relatively slow timescales, if your goal is to completely destroy humanity. The single exception to this is nuclear war, but if you’re correct, then we can reduce the problem to non-proliferation, which is at least in theory solvable.