Ian, I must admit that you have shown me two things:
1) You preach to yourself as you preach to us.(And actually are getting better at it.)
2) I would imagine that God (If He exists) does use you at times, but I think that the Devil (If he exists) also uses us Christians as a walking advertisment aginst christianity sometimes.
Lets look at it from the atheists point of view, IF we even can.
Perhaps it would be better if we christians stopped trying to force the freewill hand of the atheists and just allowed our God..and His Spirit...to flow through us by our actions and draw them towards Him by His gentle pull.
Lets get back to the issue of
Why Atheism is a belief, however.
Why should we worry about this "great commission" sorta thing? Can't God Himself reach these people IF in fact our belief system is the "best" way?
Perhaps the way atheists see it is live and let live. They probably DO figure out that Christians (many, at least) have this seemingly irrational and zealous desire to correct their belief system.
Perhaps Christians would actually do more good by leaving atheists alone and allowing the Spirit (which we christians "know" to be real) draw the atheists closer to the Truth that we (christians) all believe to be real.