I can appreciate that conditions in, using your example, in Kenya, are dire. But it is also true, as is pointed out in Sports Illustrated that,
"In Kenya there are probably a million schoolboys 10 to 17 years old who run 10 to 12 miles a day. . . The average Kenyan 18-year-old has run 15,000 to 18,000 more miles in his life than the average American--and a lot of that's at altitude. They're motivated because running is a way out. Plus they don't have a lot of other sports for kids to be drawn into. Numbers are what this is all about. In Kenya there are maybe 100 runners who have hit 2:11 in the marathon--and in the U.S. maybe five. . .With those figures, coaches in Kenya can train their athletes to the outer limits of endurance--up to 150 miles a week--without worrying that their pool of talent will be meaningfully depleted. Even if four out of every five runners break down, the fifth will convert that training into performance..."
My point is that the people in Kenya are not spending 100% of their time thinking about drinking water and although the conditions there are bad, they are still human beings striving to make themselves better. They may need help digging a well, but that doesn't mean they should be denied everything else.