JD. You may be right that microbes are not killed out right although they do seem to be hampered by continued chemcial fertilizer use. It seems arrogant to think microbes in the soil can't do their job properly unless we intervene. It makes more sense for us to study how they work and then support that.
Anyways, I think the issue of chemical fertilizers is more about sustainability. If you could focus your arguements proving that, I would listen.