An expert told me on the phone that “the claim that condoms, or condoms, can defend against AIDS is pure nonsense. As we all know, condoms are not 100% effective. In real life, there are many people who go to the hospital for abortion because of the failure of using condoms. Since the condom can’t even do its own job, how can it play a very reliable role as a defense against HIV?” The main reasons for condom failure are: rupture, slippage, poor latex quality, poor thickness and elasticity, improper selection, repeated use, etc. The HIV virus is smaller, 1/2000th the size of sperm, and more likely to pass through the tiny, imperceptible gaps in the condom. Even if a condom is used correctly and does not slip or break, a small amount of semen may leak out from the root of the condom and come into contact with a woman’s vulva, causing her to become infected with HIV. There are many ways that HIV can infect people, whether it is the vagina and vulva of a woman or the penis and perineum of a man, as long as there is a minor abrasion of the skin or mucous membrane; such minor abrasions occur frequently during sexual intercourse. In addition, HIV can infect others at any time. HIV is most likely to attack the Langerhans cells in the oral, rectal, vaginal mucosa or other parts of the skin, first multiplying in the Langerhans cells, then entering the bloodstream and spreading throughout the body, because there are a large number of Langerhans cells on the surface of the mucosa and skin, so the chance of getting infected with HIV is much higher than getting pregnant. Only once a month. Failed contraception can be remedied by a thousand abortions, but HIV infection cannot be remedied. In view of the above, condoms are extremely ineffective in protecting people who have high-risk sexual behavior. Therefore, it is irresponsible to promote the correct use of condoms to “defend against STDs and AIDS”. Condoms do not guarantee the safety of sexually promiscuous people. On the contrary, it will encourage their debauchery. I once said to a man who was promoting the use of condoms to prevent STDs and AIDS, “You should not over-promote the role of condoms in preventing AIDS.” He said, “If you don’t tell them to use condoms, what do you tell them to use?” I tell you again: Condoms cannot effectively prevent STDs and AIDS, they can only mistakenly make people feel psychologically safe, making them more paralyzed and less alert, thus accelerating the prevalence and spread of STDs and AIDS. As for the question, my answer is: cleanliness and self-love are the good ways to protect ourselves, our families and society’s health and to defend against STDs and AIDS.