Never say never.
/johnny
It’s certainly possible that they’ll eventually create a cure for AIDS, but you didn’t mention the larger issue. What activities cause and spread AIDS and other diseases in the first place?
Our culture is focused on the effects—not the cause. Even if AIDS is cured—and a cure would be great—what’s next? The people who choose high risk behaviors will continue to spread other diseases and quite possibly originate something even worse than AIDS, but we’re not supposed to mention THAT.