Good points all. One tangible effect on those without the disease is that AIDS has put the fear of God into everybody regarding unsafe sex. Suddenly, pregnancy and the clap are concerns #2 and #3.
It will be intriguing to see how the situation plays itself out in Sub-Saharan Africa, where approximately 75% of AIDS fatalities occur. Despite Western intervention, like you mentioned, approximately 6% of that region is currently infected, including 17% in South Africa.
Between lack of awareness, resistance to knowledge, teenage prostitution, etc. those numbers probably won't sink very soon.