Well - I don’t know that I’ve castigated anyone. So far you are making the same point I made. HIV/AIDS can be prevented by self-control. And then I made some points you seem to agree with (many diseases are preventable with a little prevention). I’m glad we agree.
I think the biggest push should be on prevention: educating people about HIV/AIDS and about how they can prevent or limit transmission, just as I agree we should teach kids to eat right, exercise and warn them about the dangers of smoking.
But any time you have 40 million already infected, for whom that news is too late, I think you have to do something more to help find treatments and/or a cure. We do that for people suffering from other preventable diseases -- like lung cancer, the common cold and heart disease -- and we do it for HIV/AIDS. I see nothing wrong in that.