Miles, one excerpt from your original post exemplifies how you are carelessly given to rank, overblown and incorrect generalizations when attempting--as you often vainly do--to taint "all evangelical Christians" with the same tattered and overworked tar brush. You say, "They unanimously repeat the same story about becoming a believer. They confess that they had once been an evil atheist."
Ridiculous on its face, Miles. The majority of evangelical Christians never were atheists; thus "They" could not all have been unanimous in repeatedly recounting your contrived version of their allegedly unanimous experience.
But, if you had been right about this, Miles, then you and other atheists surely would have cause to worry, since if all of the millions of evangelical Christians were indeed defectors from atheism, then such a trend would, in a short time, eradicate virtually all atheists. Truth be told, Miles, for about 2000 years, there never have been anywhere near as many atheists as there are--or have been--"evangelical Christians."
Face it, Miles, things are not so just because you, in your pompous self-inflated manner, just decide to say they are so!