The Earth's Immune System

Ask any one. They'll tell you if they could, they would definitely find the cure for cancer. Or AIDs, or hepatitus. It's morally appreciated to wish that no human have to suffer an unncessary death.
With the population growing as rapidly as they are, it may be a good thing.
Today, I flipped this moral into something different. I thought about it, under the inspiration of the words "I believe the human race is a virus."
Take a look at people in Kenya. They are one of the most rapidly populating countries in the world. Soon they will be three times as populated as Europe. With this rapid growth, there's thousands of people, running around in a country ravaged with AIDs, a high infant morality rate, and shortened life spans.
Yes, yes - "an utter catastrophe." But without these epidemics, what would the population look like? Without these deaths, how many more people would still be alive, using up necessary resources, taking up occupations, and reproducing?
I'm an advocate of the theory, that AIDs is infecting people as rapidly as it finds NECESSARY. Mind you, that is not to say that AIDs is a single thinking individual, or that this is not a tragic fate. I will say again, that AIDs appears to be infecting people as rapidly as necessary, for human survival. Every 6 of 9 women in Kenya are infected with AIDs. That means that 6 of 9 women will live to be age 50. There is still time for them to reproduce, to live a full life- but it's almost as though AIDs is helping the earth become neutral- to control the population, even.
With our newer technologies in health advances, we're helping older generations last longer, meaning that yes, those 100 year olds ARE still using our resources, and no I'm not saying no one loves the 101 year old man, but think back to the 1800's.
No one lived past 30! Slowly we increased our immortality, and now, older generations are using our resources, along with the rest of us. Older generations, babies, children and adults are living healthier lives. Longer lives, more resources used, more waste produced, healthier people living longer producing more healthy people. And we wonder how to fix the water-shortages, and the over populations.
Cancer, AIDs, SIDs all help Earth control the population.
Like an immune system, fighting off a virus.