I had a conversation with two of my colleagues about how HIV/AIDS came about. They are of the school of thought that it came about as a result of [b]zoonosis [/b]but I refuted their arguments. Most humans have pets at home, so why is it that they don't have HIV/AIDS? I believe HIV/AIDS came about as a stupidity of man having intimate contact with animals or an experiment that went wrong. What is your opinion about the subject? All opinions are welcomed from critics, pessimist, optimist etc.