The only ways I can see a condom not being 100% effective is because of the user's fault. If you leave it on the car all day taking heat, put it in your wallet, or don't even know how to put it on very well or use it well of course it ain't gonna be 100% secure condom. Plus I know idiots that do it with a condom then they finish without one, brilliant. Me I leave it nice and cool on my room, watch the expiration date and if im to far from home then 5 minutes waiting on a pharmacy ain't that much. I treat condoms like altars and thanks to that i am free of being spooked. Plus
The population of Africa is 922 million. 60 million people there have HIV or AIDS. That's 15% of the population. So basically, about 1 in 7 people have this disease.
You really don't know how fast and wide a disease without a cure spreads. It is Africa and while the south part of it is very well developed, there will always be idiots on any part of the world. Now the big part of it... thats a different type of setting, civil wars, not much technology, not much education in some it is a gun or agriculture plus the damn disease supposedly came from there. But you can criticize Brasil, now that country really needs education about condoms.