Africa is really a place for the wealthy traveler. It's got some nice hotels, but they're very expensive hotels. It doesn't really cater to the backpacker or to the overland traveler.
I don't look down on tourism. I live in Hawaii where we have 7 million visitors a year. If they weren't there, there would be no economy. So I understand why a tourist economy is necessary.
A journey awakens all our old fears of danger and risk. Your life is on the line. You are living by your own resources; you have to find your own way and solve every problem on the road.