Christianity's doom

I believe that Christianity's strongest opponents are not angry critics who spend all their energies working to attack it's theology or methodology, but rather agnostics who consider it no threat at all and don't even waste their breaths with a reply to it, because in their hearts they don't care whether it is true or not. For them Christianity is not worth their time. If Christianity is just a myth it will fade in time without any effort at all. Similarly, if bad Christians, believing their theology to be the most true simply take all of its facts for granted and live by none of its principles they themselves become Christianity's detractors. Its Truths are of such noneffect as to negate itself of any good.