The purpose of the Krishna Consciousness movement is not to defeat people through argument & philosophy, but to induce them to chant the holy names. Our purpose is to somehow or other induce people to chant the holy names.
To the degree you accept responsibility you become Krishna Conscious.
In Kali yuga, duration of life is shortened not so much because of insufficient food but because of irregular habits.
The materialist thinks that persons engaged in Krishna consciousness are crazy fellows wasting time by chanting Hare Krishna, but actually he does not know that he himself is in the darkest region of craziness because of accepting his body as permanent.