I didn't see much in the way of poverty when I was in East Africa. There were plenty of poor people, but probably not much poorer than the people back home.
There were plenty of people making a living off the tourist trade thought - selling art and crafts and in one case their sister.
The price was 200 cows. I said I wanted to see her before handing over my cows, but my truck left (thankfully) before he could return with his sister.
in South America is was the same - lots of people doing what they can to earn a living.
As you say, tourism gives them that opportunity.
So if you are looking for an exotic destination I can recommend East Africa (I haven't visited the rest of it yet). Botswana is just awesome. I would go back there in a heartbeat.
Yes exactly people think Africa=poverty but it ain't so. Botswana,Namibia and Mozambique is a must visit @trevor.george