You're right, I didn't actually mean that I'd certainly save several lives, in the same way that I would if I funded 2 life-saving operations which wouldn't otherwise have happened. Instead I meant that I'd save several lives in expectation - i.e. that part of the expected value of my donation is the saving of those lives. I didn't spell that out to avoid being too verbose. (And you're right that this these lives saved are only part of the value of donations to AMF - as you say, they also spare large numbers of people the miseries of malaria, whether or not they would have died without bednets.)
You're right, I didn't actually mean that I'd certainly save several lives, in the same way that I would if I funded 2 life-saving operations which wouldn't otherwise have happened. Instead I meant that I'd save several lives in expectation - i.e. that part of the expected value of my donation is the saving of those lives. I didn't spell that out to avoid being too verbose. (And you're right that this these lives saved are only part of the value of donations to AMF - as you say, they also spare large numbers of people the miseries of malaria, whether or not they would have died without bednets.)