I always thought Christianity was about saving souls, not saving the earth. As I recall, heaven and earth shall pass away...
Silly me.
The things of this world do not endure. Man is but for a season. A church that is not concerned with eternal salvation will not find a flock to hear its message. Mainstream Christianity is being squeezed out of existence by the pagans that have taken it over.
(Go Israel, Go! Slap 'Em, Down Hezbullies.)