For me it wasn't the ones who overtly hated God who had an effect on me: it was the intellectuals who feigned indifference.

Apologetics is useful from a pattern recognition standpoint, where if you hear a certain argument you are probably talking to an enemy agent. But looking back to my upbringing, I think there was too much emphasis on the arguments being "wrong" and not enough emphasis on the arguments being "evil". Of course they are going to be both, but at the time you hear an argument you may lack the intelligence or wisdom to see that it is wrong. And when that happens, you need to be able to fall back on "even if this is correct, it is still evil; and I reject it on that basis alone". Even a lot of Christians are uncomfortable rejecting something purely on the basis of good/evil without any sort of intellectual justification.

I would have benefitted from learning how to say "you may be right, and I may be wrong; but regardless I will still serve my Lord".