Governments exist to protect their citizenry. There will be no traditions to pass down if a society or culture dies, when with the right information, it could have chosen to survive. But AIDS prevention messages without sex information do not work as well because the key piece of the puzzle is missing. There will always be risk-takers and gamblers. A result of blaming high risk groups only and lack of self esteem.
Some people feel little or no responsibility to others.
Recognition of problem costs money, manpower and potential loss of face. High risk groups are often marginalized and highly unpopular in society. Tourism may be hurt. Foreign investment may be scared off. A high incidence of AIDS may suggest a sick society.