Do you have a death wish? Because that's what I generally associate with travelling to Africa.
We detached this subthread from https://news.ycombinator.com/item?id=11533422 and marked it off-topic.
Which countries specifically? You appear to be terribly underinformed about Africa, here's an interesting quiz for you to take[1], see if you can tell which picture was taken in Africa, and which was taken in the US.
Although I do take your point - violence wasn't the only threat on a lot of those "roads".