As far as I am concerned, you are free to believe in whatever you so choose. If you don't think HIV exists, then don't believe it. But some people do believe it does and if they have sex with you, don't you think you should owe them the courtesy of wearing a condom? After all, if you don't think HIV exists, you pretty much have nothing to fear. But others do and others do think HIV is real and unprotected sex is a means by which it spreads. If you feel that wearing a condom is a disrespect for your personal freedoms, then don't have sex, because condoms also prevent the spread of STD's (unless you think they're false as well), and they prevent pregnancies from occuring.