A case for cannibalism in society

[genkaus]

It just seemed queer that your intentional point was to condemn the saving of life.

No, it's not the "saving of life" that is being condemned, it is the "risking of one's own". That's an important distinction.

Then, according to this, does the fireman not have providence over his own body or not?

Ofcourse he does. But how is that relevant?

Furthermore, self-sacrifice in order to save another (or multiple others) is hereby condemned if this is accepted.

True enough.

There also comes the issue that all things are dangerous and there is, therefore, no such thing as moral behaviour because the simple existence of a human is a risk to its own life. What do you say in response?

On the contrary - all things are not dangerous. Rather, I should say, "danger" is a relative term. It refers to the likelihood of harm or injury. When a course of action is deemed dangerous, a comparison is being drawn between taking that course of action and inaction. Within the context of the proposed ethical theory, the least dangerous course of action is usually the moral one. Though, it won't be as simple as that - since there are other factors (such as longevity and fulfillment) in play as well.