Of course, for someone who doesn't believe the gospel, Christianity is foolish and irrational.
tangent footnote: a lot of people , everywhere (in life, in forums, in pulpits, in churches) , it seems, don't reveal the sin they are holding on to, that they don't want to give up,
when they keep resisting the truth and blame others for not 'accepting' them as if that is an excuse to keep on living in sin.
If they find a leader or a group that tells them "come on in" , AND , "stay in sin" , don't worry about repenting ...
they all too often go for it, and end up far worse than before,
and causing many to sin/ stumble/ get on the path to destruction WITH THEM.