I'm in my late 60s and my wife has several co-morbidities. This isn't hypothetical for us. If either of us brings covid-19 home,we both have an extremely high chance of dying or being permanently disabled.Completely absurd analogy. Even being exposed that 1 person in 500 that has the Chinese Virus and then actually contracting it is infinitesimally small. And even if one contracts it, the chances of recovery are quite good. In your hypothetical, getting the right chamber in the right revolver is immediately and irreversibly fatal.
If you are not in a high-risk category and if you have no contact with anyone in a high risk category (that you care about), then you can talk about the risk in hypothetical terms.
We can't. If we catch this disease, everything known about this disease indicates one or both of us is going to die.