McCain Answers Science Policy Questionnaire
My wife works with international HIV/AIDS programs, and they call PEPFAR Bush's only success. It has terrible things in it, like the abstinence-only education you mention, but it provides a significant amount of money for infrastructure, health workers, etc., and represents a serious increase in commitment by the United States. It has obvious faults, but don't throw the baby out with the bathwater.
If the next president were to just cut aid because it's impossible to pass it without throwing bones to our fundamentalists, we'd be worse off.