It's an interesting idea that HIV brought gays together, and I think it's true -- imagine the strain of all that health care without any sort of government assistance. However, I don't think we need to "worry" about HIV getting cured soon; the treatment in the article worked only because the man was losing all his bone marrow anyhow. Losing one's bone marrow is extremely dangerous, and starting from scratch with a stem cell is still a nascent technology. Some problems have a habit of taking forever to cure -- many treatments that work great in mice, for example, don't go so well for humans, and skin implants, which were thought to be solvable in the 80s, are still a problem today. On the other hand, you never know -- some things may work out easily.