Why there are so many cows&kangaroo, but there are many people who are starved ?

in every country it's different, the Way of live i mean. This question has a long answer i can't do it in a couple words.but for africa the masai masai tribe they look thin and unhealthy.But i can ure you those people are very happy with their live stock.from that they get goat milk,camel milk.in other part of the world it,s harder for the animals to survive.It's just a little piece of the answer , you asked for. i hope your satisfied LOL