Tell that to someone who got a blood transfusion between 1982 and 1983. Or their spouses and children. Forgive me, I was being a bit over-expansive. Yes, there are sad cases that are the results of such terrible and unwarranted circumstances, as there are some who have contracted it by marrying into someone with the undetected condition.
However, its continued accelerated growth is primarily (although not exclusively) the result of continued non-monagamal heterosexual sexual contact or intravenous drug use.
AIDS is basically a lifstyle disease. SARS is bad timing (until we hear otherwise).
heterosexual spread may contribute to the increasing incidence (new cases per year, as opposed to prevalence which is total cases per year) worldwide; but I believe that the majority of increasing incidence and prevalence in the US is still in the homosexual community.
There are many younger homosexuals who are actively pursuing infection with the virus at this time as a rite of passage sort of idea.
Seems they have forgotten how bad the disease can really be since many of the younger people are now seeing mostly only the HIV positive people who are on multiple anti-HIV drugs and exhibit minimal, if any, symptoms as long as they take the meds.