Here are some of your eccentric aunts and the folly they wrought.
http://www.freerepublic.com/focus/f-news/1831993/posts
If a man's heart is reborn his life will be reborn. And if one man's life is reborn, that productive, God-glorifying life will positively effect the society in which he lives.
The very concept of Christianity asserts that physical and mental well-being come from a correct world view which is God-centered. When our perspective changes, our lives change and thus, society is impacted positively.
All as God wills.
Or else you've declared defeat before the game is over.